What is Computer? A computer is a device that accepts information (in the form of digitalized data) and manipulates it for some…

Computer Generation Development of is known as Generation of Computer. Development of computers is categorized into five Generation depending upon size, technology used,…

Computer Classification Computers can be generally classified by size and power as follows: Personal computer: A small, single-user computer based…

Hardware, Software & Firmware   Computer Hardware Computer hardware is the physical part of a computer, including the digital circuitry, as…

Input Devices Input Devices are used to input provide data to the computer. Depending upon data to be input, we use different…

Bar Code Readers A bar code is a specialized code represented by sets of parallel bars of varying thickness and separation. This…

CPU [Central Processing Unit] Central Processing Unit Though the term relates to a specific chip or the processor a CPU’s performance is…

What is Output Devices? Output Devices An output device is a piece of hardware (a key physical part of a computer that…

A BUS is a subsystem that transfers data or power between computer components inside a computer or between computers and typically is…

Computer Memory Memory can be very confusing but is usually one of the easiest pieces of hardware to add to your…

Memory Unit Computer data is in what is called binary format. This means that it is always a 0 or a 1.…

Computer Data Computer data is raw information required by the computer to be able to operate. It is used to: •…

Files & Folders   Files Once you have typed or created a new document or file on your computer, you…

Backup & Disk Defragmentation Defragmentation In the context of administering computer systems, defragmentation (or defragging) is a process that reduces the amount…

Computer Software The term software describes the programs that run on your system. This includes your computer operating system and other computer programs which run. The…