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Hardware
The physical components of a computer are called Hardware. You can touch, see and feel hardware. the input/Output devices (such as keyboard, Mouse, Printer, Monitor), CPU, Memory unit etc. are example of hardware.
the basic hardware components of computer system are shown in the following figure.
A brief description about basic components of a computer system is as follows:
1- Input device
the data and instructions are given to the computer as input. the input device is used to give input to the computer. It accepts input (data & program instruction) in a from that a computer can use. the most commonly used input devices are keyboard, mouse, scanner, microphone etc.
2- Processor
Processor is the most important component of the computer. it is also known as central processing Unit(CPU). it is considered as the brain of the computer. it processes (or manipulates) input data according to the given instruction, and converts it into useful information. it is further divided into two main components: these are Control Unit(CU) and Arithmetic Logic Unit (ALU).
3- Memory Unit
the memory unit is another important part of computer. it is used to store data and instruction that are currently in use. the main memory or REM is an example of memory unit.
4- Output Device
the processed data is also known as output. the output device is used to get output from the computer. it gives processed data or results in form that a user can understand.the commonly used output devices are monitors, printers and speakers.
5- Secondary storage device
it is used to store data and programs permanently for later use.the commonly used secondary devices are hard disk,USB drivers,floppy disk,CD-ROM etc.
6- Bus interconnection
a bus is electrical path on motherboard.it consists of 8,16,32,or 64 parallel wires.it links different components or devises on motherboard.the data,instructions or control signals flow from one component of computer to another through bus.
the basic hardware components of computer system are shown in the following figure.
A brief description about basic components of a computer system is as follows:
1- Input device
the data and instructions are given to the computer as input. the input device is used to give input to the computer. It accepts input (data & program instruction) in a from that a computer can use. the most commonly used input devices are keyboard, mouse, scanner, microphone etc.
2- Processor
Processor is the most important component of the computer. it is also known as central processing Unit(CPU). it is considered as the brain of the computer. it processes (or manipulates) input data according to the given instruction, and converts it into useful information. it is further divided into two main components: these are Control Unit(CU) and Arithmetic Logic Unit (ALU).
3- Memory Unit
the memory unit is another important part of computer. it is used to store data and instruction that are currently in use. the main memory or REM is an example of memory unit.
4- Output Device
5- Secondary storage device
it is used to store data and programs permanently for later use.the commonly used secondary devices are hard disk,USB drivers,floppy disk,CD-ROM etc.
6- Bus interconnection
a bus is electrical path on motherboard.it consists of 8,16,32,or 64 parallel wires.it links different components or devises on motherboard.the data,instructions or control signals flow from one component of computer to another through bus.
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