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Afaq Ahmad Khan

First program in Java

Open an editor like: Notepad, Sublime etc and write. Go to command prompt: (javac for compile and java for run).

Java Features

Java language is simple because mostly syntaxlike C++ . Java removed pointers, operator overloading etc. No need Java has Automatic Garbage Collection which removes non referenced objects .

Java History

Java team members developed a language for digital devices such as televisions, set-top boxes etc. Now a days, Java is widely used in online programming, mobile devices, video games, e-business etc.

About Java

Java is an Object Oriented,High level, Robust and Secured programming language. Java Application Running on 3+ billions devices.

Types of Computer Languages

Machine language Assembly Language High Level Language

Basics of programming

Approaches to Problem Solving Concept of Algorithm Concept of Flow Charts Assembler, Compiler, Interpreter, Linker, Loader

Number System

Binary Decimal Octal Hexa Decimal Binary Some content. Decimal Some content in menu 1. Octal Some content in menu 2. Hexa Decimal Some content in menu 2.

Introduction to Operating System

Operating System An Operating System (OS) is System Software. It is an interface between a computer user and computer hardware.It performs many tasks such as File management Lorem ipsum dolor sit amet, consectetur adipisicing elit Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris… Memory Management Lorem ipsum dolor sit amet, consectetur adipisicing elit.Ut […]

Basic Operations of Computer

Basic Operations or Functional Components of Computer Computer Organisation/Block diagram of computer Input: This is the process of entering data and programs into the computer system. Input devices areKeyboard.,Image scanner,Microphone,Pointing device, Graphics tablet, Joystick, Light pen, Mouse, Optical, Pointing stick, Touchpad, Touchscreen, Trackball,Webcam, Softcam etc. Control Unit (CU): The process of input, output, processingand storage […]

Introduction to Digital Computer

There are four types of digital computer…. Super Computer Mainframe Computer Mini Computer Micro Compute   Super Computer A Supercomputer is used for super complex task such as  Weather Forecasting, Nuclear Simulation etc. The first Supercomputer is introduced in 1976. CRAY 1 is first Supercomputer. Main Frame Mainframe computers are computers used primarily by large organizations […]

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