‏إظهار الرسائل ذات التسميات Educate Yourself. إظهار كافة الرسائل
‏إظهار الرسائل ذات التسميات Educate Yourself. إظهار كافة الرسائل

الأربعاء، 9 سبتمبر 2020

Who is a software engineer ? All you need to know about a job as a computer or software engineer

Who is a software engineer ? All you need to know about a job as a computer or software engineer

Who is a software engineer


Dear followers welcome to a news article about a job or profession of a software engineer. First, this job needs to have studied and graduated from the College of Computers and Information. Whether you studied this major at a university or in an institute, the study period is 4 years, this job needs to be distinguished from Other than you because it needs a thinking and creative person, and it is branching out of many disciplines, including software or games developer, whether on the desktop or on phones, or even you can become a web developer and all the specializations of this job are very important in our time because we encounter developments in technology and this job is considered one of the most wanted jobs in the world, not just Arabs. And let us now get to know some of the college's specialties.

Software developer


You can acquire this skill by taking courses, whether online or in centers, and it is preferable if you work in the Arab world as centers for a reason, which is the certificate, and also the strength of the place from which you received the certificate, but in the western countries the situation is completely different, so most of the demand is on the person’s experience, meaning that most of them want To see your previous work and experiences and not the accusation of martyrdom because he is looking for someone to finish his work for him and he is not an educated person and does not know how to work, so I think that your testimony in some western countries may not benefit you, but in the Arab world it is very important. This position is frequently required in the Gulf countries such as Saudi Arabia, the UAE ... etc.

Android developer


Most of the projects that are held these days are now on phones, so if you want to start a project from your home or want to work as a free agent, you can learn to develop Android programming and master it well so that you can create an Android application that comes to your mind or in the mind of the customer and you can work with Companies from your home only by developing an application for them and technical support on it and every year the company pays you money for this support, this job you can acquire through the Internet or from registering in one of the approved courses in order to master this job, which is very important and its profit is high.

Web developer


The web developer is no less important than the Android developer, so now most of the large companies have their own website and application in order to reach the largest number of customers, and the development of websites requires you to learn the programming languages ​​of the sites such as PHP, HTML, CSS ... and other languages ​​and also the web developer is divided There are two parts, Front and Back and both of which are very important. Also, the demand for it in the Gulf countries is great, so I advise you to learn it if you intend to work from your home or travel abroad.

The field of a software engineer is very large and deep and I cannot cover it in one article, but I mentioned to you most of the disciplines that need programming within this field, and I will try to mention other disciplines such as data biz and others in another article. Also, I study in the Faculty of Computers and Information.


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What is the job of a personal consultant

What is the job of a personal consultant?

The nature of the personal consultant's job


Welcome to follow our website for a new article and a new job, which is a consultant or a personal consultant, this job is not only limited to the doctor as you think, but there is a real estate consultant, a personal consultant, a project construction consultant, for example, you are a person who has very much experience in building successful projects because of the mistakes that are made You fell into it in your beginnings until you became an understanding of the field in all respects. You can now help novice people build their own projects to make a profit and help them in the money paradise, but for a fee, or you can work as a road and place consultant, meaning there are tourists who stay in the country in which you are, so you can help them wander around the restaurants and clothing stores in your city and make money for The way to the restaurants that I went to would be in the beginning I agreed with him and every visitor has a certain amount and so on, this job also you can profit, through the Internet all you have to do is discovering what you can offer and help people, for example, programming or building projects as previously mentioned in the beginning or help in Choosing home furniture ... etc., this job is very big and deep, you can start it immediately when you discover your skills, and if you do not have anything creative with it, do not worry, you can look at other jobs on our site.


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الاثنين، 17 أغسطس 2020

The university email is a treasure in your hands, but you do not know its value


The university affidavit that the university provides is a treasure for all students


The university email for university students is a great treasure for every student, because the e-mail that the university provides to almost all its students can be used on the Internet very much and has important benefits, as there are many sites that care for students and provide them with discounts, free programs and copies of Windows for all students who are available On a university email, these emails usually end in the edu domain, and now let's get to know more about university email and how it can be used

How do you know a university email and how to get it ?


The university email usually ends with the phrase edu, for example mindegy1.edu.eg. This is for Egyptian e-mail, but the matter varies from one country to another, but all contain the phrase edu, and this mail often has an outlook. To the student advisor or "Information Technologyy" and inquire on your mail, as almost every university provides an email to all of its students, and in this article I will tell you how to benefit from this mail and what its advantages.

How to activate your university mail ?


Your e-mail associated with the university is very important and the student must take advantage of this mail and keep it because it is a card for you on the Internet and the next vision for 2030 aims to make the Internet and technology enter our lives more and the next deal may become online and distance education may be one of the most important steps That the next vision aims for Arab universities, and you can attend your lectures through your university mail and so on, and in order to activate your university mail, go to the mail.office365 website and type your e-mail and password and fill in the rest of the data and this information You already got it from your university and this place you can send and receive messages through, which is like a gmail.

Is it possible to obtain a university college email for non-students?


Many people think about the way to make a university mail and he is not a student at the university, unfortunately, so he goes to the Internet and looks for ways to make a university email, but unfortunately he does not find ways, and the reason is that this mail creates education members for each undergraduate student, so Don't bother looking for illegal ways to get unofficial mail.

Services that can be used by university mail?


Get free Windows

You can get an original Windows copy for free from Microsoft. All you have to do is go to the following link and go through the registration process by mail that the college provides to you. After that, choose software and type in the windows search box then consumer edition and click on the view key and save the serial For the copy you have on your computer, so that if you need it in the future or if your available Windows is pirated (not original), you can activate the copy of the tiger that you got, get it from here

Get free hosting

Thanina Education site offers every university student the possibility to get free hosting and a set of other features that I will leave to get to know. All you have to do is create an "create an account" account, and you will also register your university email and complete the registration process and enter the site and get to know Advantages, to get it

Get software from Auto Desk for free

The giant company auto desk, which is specialized in 3D designs, also provides students with free gifts and great discounts on its programs such as AutoCad, 3D Max, Maya and other famous programs of this giant company, the method of registration here like other sites, register your university mail and start enjoying the programs Terrible, get it now

Amazon prime

The global shopping company Amazon provides a feature called Amazon prime, which it provides free of charge to students, as this feature will benefit people who buy from outside the United States, as it offers free shipping and other benefits for a period of 6 months, and after the period ends, you can renew it again at half the price (50% discount) Get it now

Students accused of programming

The next website, Jetbrains, which is directed more to developers and students accused in the field of programming, where through this site it is possible to download free programs dedicated to programming (more useful for computer and information students and students of computer and network engineering), service link

Free Microsoft Office Edition activation

Through your mail, you can activate copies of Microsoft Office all versions, whether 2020 or later, and this is one of the biggest features that I liked very much in university mail because I personally suffer with Microsoft Office programs as they are paid, so you also tried to take advantage of this feature. Activate all versions of Office

Discounts from Apple for students

Apple offers to every email collectors a set of services and discounts for students around the world, in cooperation with faculty such as iPad, which students can get at a reduction of $ 100 from its original price; All you have to do is the Apple website and register your university e-mail or communicate with someone in the company's “official” stores to get the product discount. Apple discounts for students

Get a free VPS

There are 5 sites that offer students the benefit of the VPS feature, which is a cloud storage on the Internet that enables students to store their files on the Internet with ease, and also if you have servers you can run them on your VPS, and from those sites that offer this feature


Discounts on Adobe products

Adobe is one of the largest companies dedicated to design and graphics. It has popular programs such as Photoshop, Premiere, and Aftraffect and other programs. And many students enjoy this discount and try to take advantage of it to learn graphics and designs. In short, if you want to get a discount on this package, you can register through university mail and enjoy the discount, get a discount from Adobe for university students

Advice to all university students


All students must obtain these advantages provided by every university email before the end of the university period and use the features that will benefit you in your professional field, as your mail is of great importance that you can benefit from free of charge during your education so do not waste the opportunity that is in your hands and try Tapped it well.



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الاثنين، 10 أغسطس 2020

DC Analysis of BJT (Bipolar Junction Transistor) Amplifier Circuits

DC Analysis of BJT (Bipolar Junction Transistor) Amplifier Circuits

DC Analysis of BJT Amplifier Circuits


By using my common emitter amplifier circuit shown in Figure 1.5, this use helps the equivalent circuits in analyzing other circuits. DC analysis within a common emitter amplifier circuit also begins by determining the deviation values of the electrical current and then the coupling and overflow capacitors, the load resistor and the signal source for the production of a DC circuit are applied by applying a theory called Thevenin and the Kirchoff voltage law.

DC Analysis of BJT (Bipolar Junction Transistor) Amplifier Circuits

The analysis of the coin (AC) of the common emitter circuit begins with knowledge of capacitive reactance (XC) as it is still very low when starting the signal frequency process. By taking into account that the XC is equal to the number zero, if it is, then the process of reducing the circuit from one circuit to another must be equivalent to the current that produces frequencies that requires replacing the three capacitors also in the circuit with effective shorts. Then the analysis process continues by replacing and change the current source of the current in the ground. From an AC analysis perspective, the DC voltage source has an internal resistance of zero ohms

Fixed bias


This form of bias is also called base bias or fixed resistance bias. This model is used as a single power source for example (battery) for both the collector and the transistor base, although other separate batteries can also be used

DC Analysis of BJT (Bipolar Junction Transistor) Amplifier Circuits

Advantages


The operating point can be changed anywhere in the active area easily with only the basic resistor (Rb).

Needs a very small number of ingredients

Disadvantages


The combined current does not remain constant, whether at temperature or at the voltage of the power source. For this reason, the BST operating point is is unstable

Changes in Vbe will change IB and thus cause IE to change.

Emitter-Bias


When a separate source or so-called (dual power source) is available, the bias circuit is most effective, and it provides zero voltage at the transmitter or collector. The Vee symbol is used for the negative width of the forward emitter intersection bias by Re, and the VCC is also used for the positive display of the inverse junction bias. Only two resistors are required for the common combining phase and four resistors for the co-emitter (2 for the co-emitter phase and 4 for the co-emitter)

DC Analysis of BJT (Bipolar Junction Transistor) Amplifier Circuits

Disadvantages


This model can only be used with a split (dual) power supply.

Voltage


The voltage divider consists of R1 and R2. The voltage is deflected across R2 forward by the emitter junction. Through the correct selection of resistors R1 and R2, the transistor operating point can be made independent of β. In this circuit, the voltage divider carries the fixed base voltage independent of the base current, but the divider current must be greater than the base current. Even with a fixed base voltage, the collector current varies with temperature (for example), so an emitter resistor is added to stabilize the Q point, you can also achieve more stable current levels without the value having a major impact on it

DC Analysis of BJT (Bipolar Junction Transistor) Amplifier Circuits

Advantages


  • only one dc supply is necessary. Reverse the previous circuits.
  • The operating point is independent of the difference β.
  • Operating point stability versus temperature shift


Disadvantages


  • If RE is large, Vcc height is necessary. Because this increases the cost.
  • Since the value of β is constant, this relationship can be achieved by either keeping the RE fairly large, or by making R1 || R2 is too low


Feedback


Feedback is the process by which a portion of the output signal, be it voltage or current, is used as an input. If this part of the feedback is opposite to the value or phase or meaning (“against phase”) then the comments are said to be Negative Feedback, or degenerative feedback

DC Analysis of BJT (Bipolar Junction Transistor) Amplifier Circuits

Advantages


• Circuit stabilizes the operating point against variations in temperature and β
• Circuit stabilizes the operating point (as a fraction of Vcc)  against variations in Vcc

Disadvantages


• Significant changes in β The operating point has changed significantly. It should be chosen fairly accurately (approximately 25%), but β variance between parts is often greater.

conclusion 

In BJT the current pass depends on the two types of charge carriers (electrons and holes). Transistors are more important than diodes for their many uses in electronic circuits, from signal amplification to designing digital logic and memory circuits. The transistor is a very small volume and has many uses that exceed the size of stages.

 It is one of the greatest discoveries that have passed through the history of mankind. The transistor consists of a semiconductor crystal containing three regions and is the following pattern (NPN) or (PNP) and one of the ends of these areas is called (E-emitter). This party contains a greater proportion of jealousy from impurities and the other party is called (C - Collector). This party contains a percentage of impurities as well, but it is less than the emitter and the third and last party is called (B - Base) which is a very thin slice of not more than ten thickness 

Microns that contain the lowest percentage of impurities depends the basic principle in the transisto The voltage between the two parties to control the difference in the current through the third party

The transistor has uses which are the amplifier, switch, and resistance to change in voltage regulating circuits, From Application of bipolar junction transistor High speed digital logic and Amplifiers and Temperature sensors and Logarithmic converters


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Applications, fundamentals and methods of Bipolar Junction Transistor

Applications, fundamentals and methods of Bipolar Junction Transistor

Application of bipolar junction transistor (BJT)


High speed digital logic:


Bipolar transistors are allowed to communicate with MOSFET in an integrated circular ring using a process called BiCMOS that enables chip fabrication to build circuits that take advantage of the application strength of both types of transistors

Amplifiers


The transistor parameters characterize α and gain the current gain of BJT. This gain is what allows BJTs to be used as the building blocks for electronic amplifiers. BJT amplifier topology contains three main factors:
the Common emitter
the  Common base
the  Common collector

Temperature sensors


The normal temperature and actual dependence of the forward-emitting current-voltage cause the forward bias, and BJT can also be used to measure the average temperature by doing the subtraction of two efforts located in two different streams of bias in a known ratio

Logarithmic converters


Because the base emitter voltage varies with the logarithm of the base emitter and aggregate emitter currents, BJT can also be used to calculate logarithms and combat logarithms. Diode can also perform these non-linear functions but the transistor provides more circuit flexibility

Fundamentals of BJT


Intersection Transistor NPN: This transistor consists of two semiconductors of type (n) that were previously known and named (emitter) or transmitter and collector all of those names are called, and are separated by a thin layer of semiconductor type (p) and called This type is in the base, and this type works by correctly determining the electrical signals, then another small current passes between the main connections,
 and the transmitter becomes this (NPN), and also generates a large current between the collector and transmitter links, and this results in the current amplification process, and in This type, some circuit is designed to use transistor R on the basis that it is an alternative (spare) device, as a "low" electrical resistance path is constructed between the emitter and the collector, during the process of the intersection of the current at the base of the emitter. Transistor.

PNP junction: the way this transistor works is not much different from the previous way this type of intersection works like the previous npn junction but here the inverse polarity is called PNP

Applications, fundamentals and methods of Bipolar Junction Transistor

BJT  Modes


Applications, fundamentals and methods of Bipolar Junction Transistor

Transistor modeling


The transistor model is defined as a set of elements of a circuit that, operating under specific and specific conditions, roughly simulate the actual behavior of a transistor semiconductor. Transistors can be modeled using either linear or non-linear models in linear models using only linear circuits. As for non-linear models, non-linear elements are used, such as duality. We show you a set of models,  which are

  • RE Form 
  • Hybrid equivalent model
  • Model T
  • Hybrid Bay model

The most popular non-linear model

  • Ypres Mall model
  • The model of Gomel Boone

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What is bipolar junction transistor (BJT) and what is the function


Introduction to bipolar junction transistor


The basic construction and construction of a bipolar transistor known as (BJT) consists of P-N junctions resulting from three terminals with the ability to designate each side to define it from the other two parties. It consists of either a thin layer of semiconductor type P that is sandwiched between two types N or another thin layer of type N, which is also sandwiched between two other types of semiconductors of type P and they are named accordingly and the reason is due to their designation because they act using each of the minority carriers and the majority. Also, the three stations are known as the emitter (E), base (B), and collector (C). The group of bipolar transistors has the ability to work within three different regions, which consists of the active region and known to work (as an amplifier), and saturation, which functions (switch) and cut (as a key). From Figure 1.1, the functional difference between a PNP transistor and another transistor known as an NPN is the appropriate (or polar) bias of the links at startup. The current directions and voltage poles of each type of transistor are incompatible with each other for any particular operating condition.

objectives of Project :


The most important thing is that the bipolar junction transistor is one of the most important topics in electronics   Because it is included in the modern electronic industries and this is what prompted me strongly to choose this distinct subject  The transistor was discovered in (1948-1949) as a result of what American scientists did in the (Telephone Bell) laboratories to use it instead of electronic valves that were working a lot in those days and the word transistor is an abbreviation of the term (resistor transforming), which means transfer and the word (resistor) means Resistance In this research we will pass a number of paragraphs that will explain to us this matter and those points that we will get to know are :

  • The project aims to understand a bipolar junction transistor with an illustration of the idea


  • . Knowing how the transistor started and who invented an innovation and how it became the greatest discovery


  • . Knowing the importance of the transistor and how the information is represented inside


  • . Learn how a transistor works.


  • . Learn about bipolar junction transistor applications


  • Learn about Fundamentals of BJT.


  • learn about Transistor modeling.


  • learn about DC Analysis of BJT (Bipolar junction transistor) Amplifier Circuits.


  • Get to know more about the models Fixed and Emitter and Voltage and Feedback bias


 what is the BJT


BJT is an acronym Bipolar Junction Transistor
It is a semiconductor electronic component that has It contains a set of three layers and a number of two layers with the same symbol type and the other the third layer differs from them layer other than it. The layer material is a semiconductor, either of type (N) or of type (P), and when the two layers are of tainted semiconductor material or what is known as (external semiconductor) of type N and the layer different from them is tainted semiconductor of type P then the transistor, In this case, it is NPN type. When the two layers are a P-tainted semiconductor, and the different layer is an N-tainted semiconductor, the transistor is in this case PNP

A bipolar Junction transistor has three terminals, and those terminals are called the base, the emitter, and the collector, and each end connects to one of the layers of the transistor. Also, we can represent the transistor according to its structure in the form of two diodes called the links of the base and the emitter, the base, and the collector and they share the elevator or the cathode, according to the type of the transistor. Therefore, the transistor is subject to the same bias rules as for the diode. In practice, there are four states for biasing the two-transistor links: the forward bias of the base link and the emitter with the reverse bias of the base link and the collector or vice versa, or the bias of both links front or both reverse, and each bias process results in different properties that can be used to employ 
the transistor 

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What you don't know about a transistor and how it works

What you don't know about a transistor and how it works

Transistor


The transistor is a shortcut to (Transfer Resistor) and is one of the most important components of electronic devices created by inventors Walter Pratten, John Barden, and William Shockley, which is a semiconductor crystal covered with germanium or silicon.
It contains a thin crystal so that the central region is a positive or negative semiconductor, and the base between positive or negative semiconductors is called the "two outer regions" and has a great ability to amplify electronic signals. The transistor is often used to amplify or switch electronic signals, and it contains three links that help to connect to the current circuit current or voltage difference This type is called a "transistor output pair", and this pair changes the current emitted through the last pair of transistor outputs
This changes the current passing through another pair of transistor outputs, because the control  (output energy ) is greater than (input energy) which gives the transistor amplifying the electrical signal, and the transistor is the newly emerging electronic infrastructure. They are used in many different devices such as amplifiers, computers, phones, and other electronic devices. The transistor is one of the most important and greatest achieve ments (20th), as some transistors are individually wrapped but most are in integrated circuits.

Why is the transistor so important ?


The importance of the transistor


*   The transistor has two main functions: turning the power off and on. About the electric current.
*   Boost and amplify electrical current

The low-voltage voltage controller is called the input signal in the two functions
Transistors are closed and opened very quickly on laptops and desktop computers because it performs the process of processing electrical charges, which represent information in binary form, is "0.1". In a binary numbering system when transistors move electrical charges one by one. The electrical circuits examine Logic, solve logical problems, pictures and words under observation, and perform all other computer operations.


How the transistor works


The transistor works in a working method called (the traditional mechanical switch), which connects or cuts the flow of electrical current, by connecting or disconnecting the ends of the wires, where the transistor contains a signal that tells the device to connect or disconnect, and thus the device can be turned on or off, so the transistor He possesses the control feature, and we conclude from this that the transistor controls the movement of electrical electrons, as its action does not depend on the conduction or cutting of the current, but rather its function also is to control the amount of electric current passing through, in addition to that it alters or amplifies electronic signals , And with that The individual is allowed to control the device by adjusting the circuit board. The transistor also performs a variety of electrical tasks, because of the ease of the electric current flowing through it by using the low-power control signal located at the three metal terminals of the transistor, and the current can be transferred To a voltage by passing it through the resistor device, or by changing the voltage by loading the resistor, in order to change the resistance of the transistor itself, and this is called the force of inflation, or the increase in the amplitude process, which is one of the most fundamental processes in the field of El Electronics


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الأحد، 9 أغسطس 2020

Systems analysis models - Featured idea


System Analysis Models


EVOLUTIONARY MODELS


1-Waterfall model


It is a cascading design process and is often used in software development processes, and progress in the workflow is in the form of fixed pieces flowing from top to bottom (like a waterfall) and for this reason it is called this and from the following stages: first knowing the system requirements, then starting the analysis, Then the design process, construction, testing, production, implementation and maintenance. The waterfall model arises in manufacturing and construction, but changes within physical environments are costly and costly, if not impossible. With no possibility to present the necessary software development process at the time, this model was simply adapted to software development

History of the model

The first conference to undertake the process of using similar stages in software engineering by (Herbert D. Bennington) was held at a symposium on the advanced programming methods of digital computers in 1956. This was a presentation on software development for SAGE. In 1983, the paper was republished with a presentation by (Bennington), noting that this process was not from top to bottom but relied on the original model .. The first process was to describe the waterfall form officially as an article by Winston Royce, which he presented in 1970, though Royce did not use the term waterfall in that material. Royce viewed this model as faulty and unable to work; This method is used in writing about software development to describe a critical view of commonly used software development practices. The earliest use of the term "waterfall" may have been in Bill and Thayer's paper in 1976

Waterfall model stages

Requirements: It is the stage of collecting potential requirements for the application and systematic analysis and is written on in a document
Analysis: It is the process by which data are collected on the problem
Design: It is the stage of designing solutions to collected problems
Building: It is the stage of building a plan with clear goals to solve the problem
Testing: It is the process of testing and experimenting with the product that we have chosen whether or not it works
Operations: This stage includes not only the deployment of the application, but also subsequent support and maintenance  



Pros of the waterfall model

The model is easy to understand
Easy to manage
The stages handle another stage when they are completed
This model allows the work to be divided into a group of small projects for easy understanding
This model is preferred for quality projects

negatives of model

It contains a large percentage of risks
Not suitable for complex projects
Not suitable for high risk
Not suitable for long projects


2- Spiral model


The spiral model combines the elements of models and design that are available on a group of stages, and this is done by trying to combine the advantages of those concepts from top to bottom and from bottom to top. Also known as the (spiral development model), it is the method of developing systems used in information technology. This model combines the characteristics of the models and the waterfall model, which was explained in the first paragraph. The spiral model was invented for mega projects because the waterfall model did not suit it, or costly and complex projects. It cannot be confused with the spiral model of modern systems architecture that uses dynamic programming (mathematically not a type of programming!) Which was designed to improve the architecture system before making design decisions by programmers that would cause problems 

History of the model

In his 1986 essay, Barry Boheme defined the vortex model by "the spiral model of the software development process and its improvement as well" and the reason is to identify unexpected errors and problems and this model was not the first model to discuss iterative development. The repetition process usually takes from 6 months to two years. Each stage begins with the design goal and ends with the customer (who may be internally) reviewing the progress made up to this point. Analysis and effort engineering are applied at every stage of the project, taking into account the ultimate goal of the project

Stages of the spiral model

1. Define requirements
2. Problem analysis
3. Introduce problem solutions (design)
4. Confirm the specifications
5. Design implementation
6. make a test
7. Maintenance errors

The positives of the spiral model

• Suitable for large projects.
• Fully documented.
• The ability to add additional requirements to the system.
• Significant risk analysis, which helps reduce the possibility of risk occurring.

The downsides of the spiral model

• Not suitable for small projects. Waterfall model preferred.
• The risk analysis process requires specialized expertise

3-prototype model


The prototype is not new, but it was one of the innovations of information systems. It used this system from an old era, where the military used sand paintings in modeling battles and structural engineers used in modeling bridges. After the procedural language calculators appeared, which called the third generation, then the prototype gained strength after the emergence of The fourth generation, and then the emergence of software packages such as CASE and SADAT, which prompted many systems analysts for the life cycle of information systems with the initial model method and the most important reasons for creating this model were to build this model to understand system requirements and also was developed on the basis of financial requirements. and The customer can give an opinion about the system

Pros of the prototype

• What distinguishes this system is that it gives the user an effective role in developing this system.
• Errors within this system can be addressed early.
• The ability to easily identify system deficiencies.

Cons of the prototype

•The complexity of the prototype can be increased by doing an expansion of the system beyond the original plans.


Incremental model


TERATIVE ENHANCEMENT MODEL


This incremental model has the same specifications available as the waterfall model stages, but with fewer restrictions
Because it combines the elements of the waterfall model with an iterative method whereby each linear sequence of increases is produced within the program and most of the time the first increase is an essential product and the first product is used by the customer and based on the evaluation results a plan for the increase is developed


RAPID APPLICATION DEVELOPMENT MODEL


This model was developed in 1980 and this model relies on a large group of short iterative software development courses. RAD is an appropriate solution for slow models as it is high speed and the duration of development is between 2 to 3 months. This model focuses on developing rapid applications and collecting customer requirements accurately through A group of experts

What are the stages of RAD

• Requirements Planning
• User Design
• Construction
• Cutover

advantages of RAD

• Understand changes that may occur in requirements
• The ability to track the development and progress of work
• Receive customer feedback continuously from the customer
• Reducing development time


Disadvantages of RAD
• Requires budget for tools utilities
• Not suitable if there are high technical risks
• It is used only on partitionable systems
• It requires the involvement of users 

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All you need to know about systems analysis


Definition of software or system development


We can define the software development process as a set of processes that produce programs. These operations include a set of stages that aim to meet the needs of the market and implement the specific design, and the possibility of producing and publishing programs, with the possibility of maintenance work for them, and the history of software development dates back to the year 1801 when the Mexican scientist Mary Jacquard created a (sewing machine) that is controlled Through perforated cards, which is a small size card that is made of cardboard and contains a group of holes, and in the year 1810 AD, Charles Babbage made the first real mechanical computer using a steam engine and called it (the analytical machine), and the American designer Hermann is In order to inherit by making a special machine for the possibility of doing the census in the year 1890 AD, and then in the year 1949 AD John Mowgli developed the first programming language known as the shortcode.


Systems analysis concept


The concept of the systems analysis process she is the process by which the problem is discovered and solved, this process divides the system into a group of its component parts in order to study the effectiveness of the work of those parts to end the desired purpose, and the field of systems analysis is closely related to the analysis of requirements and operations research Also, a procedure is being taken to assist decision-makers in the ability to make decisions in the correct way and determine the course of action in the best possible way. The concept of systems analysis can be defined as the process of studying procedures or actions to determine their goals and purposes in order to establish systems and procedures It helps to achieve these goals in an effective way, and system analysis is used in every area where development is done on something, it is a series of integrated components that provide organic functions together.

Systems analyst


systems analyst is that person who performs an accurate process of analyzing the system by studying the system and revealing it to find out what it suffers from weaknesses or problems and finding radical solutions that help solve the problem, then finding a new system and implementing it, and the systems analyst is in close relationship in terms of working with All individuals inside or outside the facility so that he can complete his work as fully as possible, also by relying on feedback, and the most important special characteristics that are required in the systems analyst:

Experience

The systems analyst must have extensive experience in the field of business and information management, the computer and methods of handling information correctly, that is, he is fully aware of the organization, management and decision making, programming methods and their languages, operating systems, and software, operations and statistics research

Character traits

The analyst must be characterized by the full ability to absorb the facility as a comprehensive system without any lack of the most accurate concepts within it, as it requires him to be able to deal flexibly and tactfully, listen to other views, write reports, and cooperate with each other.

The importance of systems analysis


The analysis of the whole organized systems includes considering the planning for the future to adapt to future changes, and the importance of systems analysis lies in testing the components of the system to ensure its integrity - and analyzing the interrelations between them and the structure of the system which facilitates its understanding and behavior,
 in order to ensure that the system contains the required features such as Safety and privacy in order to achieve the legal, contractual, and other requirements, and system analysis is useful for the following matters

1- The first importance

The system analysis process is useful for better understanding the system and knowing whether this system needs improvement, development, replacement or redesign.
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2- The second importance

The process of system analysis is very important and necessary, and the reason lies in designing a set of important tests that ensure that the system works reliably.
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3- The third importance

The process of searching for vulnerabilities within the system is performed and addressed through the system analysis process, and the cause of some undesirable consequences is also understood..

4- The fourth importance

The system analysis process enables the development of auxiliary programs that assist in performing a range of important functions within the system. The system analysis also provides inputs within the design of data warehouses, security, backup, operations, and efficiency. 

What is the task of a systems analyst


The realization of the concept of systems analysis depends on the employee of the systems analyst who is the person specialized in information technology and this person works at a high level within institutions and organizations, working to ensure that systems, infrastructure and computer systems work as effectively and efficiently as possible, and the systems analyst needs to be fully aware Operating systems and hardware and software configurations and hardware platforms, and he must be fully familiar with programming languages, because the responsibility of the basic systems analyst is in the information technology industry to know how to solve problems by linking computers or disordered systems Through the ability to define the basic system, programs, protocols and communication media that can be used to solve problems, and its presence is usually important from the beginning of the project analysis stage until the review of the resulting evaluation after using this system, and understanding the concept of systems analyst analysis helps in knowing its responsibilities, which can be summarized as follows: :

  • The role of the systems analyst lies in communicating with stakeholders and clients to define and document the necessary requirements in order to coordinate with the developers and implementers.

  • The systems analyst searches for problems, finds the necessary solutions, then recommends course procedures and coordinates with stakeholders to meet their specific requirements.

  • The systems analyst converts stakeholder or user requests to technical design specifications and represents a link between clients and IT professionals.

  • The system analyst also performs the process of helping to perform a system test, and also publishes the system.

  • The system analyst assists in the discussion of the evaluation results resulting after project completion




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السبت، 8 أغسطس 2020

How to raise a child deviant on disciplined behavior


How to raise a child deviant on disciplined behavior


In today's post, I will give you some important tips for raising your child. Peace, mercy and blessings of God be upon you. Welcome again. We know that the thing that a child is brought up has a great impact on the child's future life, so if you neglect your child's upbringing from childhood, he may deviate and there is talk about some of the skills that you should teach your child from my father Teach your children, and now we will learn about some methods and ways to raise your child 

Methods and ways to raise your child ?


Try not to punish a child for doing wrong


 Do not hit him or punish him for his mistakes because he is a child and when you hit him or insult him, he may be stubborn or he may become a cruel child when he grows up, always try to know him about his mistakes and tell him that this is wrong and you do not have to do this solution you gained your son’s trust and also felt him guilty instead of hitting him And be careful when hitting or cursing your child, he will be afraid to tell you the truth after that thus you have lost your child's confidence in you.

Teach him a hobby or sport


As we know that sport is very important for human health and enhances your child's confidence. We also know that sports are very many, including football, weightlifting, gym, tennis, swimming and other sports. Sports will enhance your child's activity and also have many benefits such as stimulating the blood circulation and enhancing the child's self-confidence. It will also teach him self-reliance and get to know friends in the same age stage as well as Learning sports, try to teach him something useful, such as learning the English language, for example

Teach your child not to raise his voice or interrupt people when they speak


. Raising the voice is one of the annoying things that some people hate if not everyone and many of our children raises his voice loudly, not from himself, so the child in his youth acquires the skills of those around him, perhaps there is someone in his family who raises his voice speaking loudly, for example, the child acquires this skill Try not to raise your voice In front of your child and teach him that this is not correct and speak in a moderate voice and also try not to interrupt those around you in their words. When the child sees you intersecting people in their speech, he will acquire this skill and he will also interrupt people in their speech, in short, the child acquires skills from those around him and does not give him it so try to be careful You are dealing in front of your child, do not curse, do not raise your voice, do not interrupt people, and many things you must beware of in front of your child and also behind him

Say no to your child


Teach your child that not everything he wants you prepare for him there are many things unnecessary by saying no to your child Many parents attend everything that his child wants and this is very wrong, there are things that have no importance and the first child you want to bring him everything he wishes you are right every father wants to He sees his child better than the rest of the children around him, but also teach him that all that the child wants is not necessary to come, try to explain to him the reason, not when he cries, you bring him what he wants.

Teach your child the Quran


Among the things that are necessary for your child to learn about his religion, such as learning to pray, memorize the Qur’an, and other things.
Prayer is a duty for every rational Muslim that if your child reaches the age of ten, he will be held accountable for his prayer, so try from the age of seven to teach him to pray and how to perform ablution, as if you take it with you to the mosque several times, and if he becomes ten years old, prayer becomes obligatory for him and also try to teach your child the Qur’an as if you attend He has someone to memorize and teach him the Qur’an who will enter you into Heaven before him or take it to a mosque in which there is a reservation for the Holy Qur’an and he will see his colleagues and be encouraged

Educational Equations:


There are several educational equations to have a behaviorally deviant child or a disciplined child, Socia.
Harmful criticism + bullying = a destructive personality
Negative comparison + contempt = demolish a character
Excessive protection + lack of responsibility = dependent personality, i.e. dependent on others
  Respect + praise = high confidence
Ignoring the negative behavior + focusing on its positive behavior = improving and modifying the behavior
Assigning him responsibility + supporting him when needed = a manly personality to depend on.

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