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Computer Fundamental

 

What is Computer?

What is Computer? A computer is a device that accepts information (in the form of digitalized data) and manipulates it for some result based on a program or sequence of instructions on how the data is to …

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Computer Generation

Computer Generation Development of is known as Generation of Computer. Development of computers is categorized into five Generation depending upon size, technology used, storage capacity , computing capacity etc. Which is first computing Device? The computing device you …

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Computer Classification

Computer Classification Computers can be generally classified by size and power as follows: Personal computer: A small, single-user computer based on a microprocessor. In addition to the microprocessor, a personal computer has a keyboard for entering data, …

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Hardware, Software & Firmware

Hardware, Software & Firmware   Computer Hardware Computer hardware is the physical part of a computer, including the digital circuitry, as distinguished from the computer software that executes within the hardware. The hardware of a computer …

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Input device

Input Devices Input Devices are used to input provide data to the computer. Depending upon data to be input, we use different input device. Some input devices are: • Computer mouse • Keyboard • Trackball (or roller ball) …

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Special Input Devices

Bar Code Readers A bar code is a specialized code represented by sets of parallel bars of varying thickness and separation. This is used for fast identification of items with an optimal scanner. The optical scanner is …

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Output Devices

What is Output Devices? Output Devices An output device is a piece of hardware (a key physical part of a computer that can be touched) which a machine, typically a computer, uses to present information to the …

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Computer Bus

A BUS is a subsystem that transfers data or power between computer components inside a computer or between computers and typically is controlled by device driver software. Unlike a point-to-point connection, a Bus can logically connect several peripherals …

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Computer Memory

Computer Memory Memory can be very confusing but is usually one of the easiest pieces of hardware to add to your computer. It is common to confuse chip memory with disk storage. An example of the …

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Memory Unit

Memory Unit Computer data is in what is called binary format. This means that it is always a 0 or a 1. It only has these two states and must be in one of them. There are …

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Computer Data

Computer Data Computer data is raw information required by the computer to be able to operate. It is used to: • Run programs– This is the actual executable program data that the computer will execute to …

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Backup & Disk Defragmentation

Backup & Disk Defragmentation Defragmentation In the context of administering computer systems, defragmentation (or defragging) is a process that reduces the amount of fragmentation in file systems. It does this by physically reorganizing the contents of the …

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Software

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 software is written in a computer language (such as Basic, C, Java, or others) by …

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