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Computer A computer is a machine for manipulating data according to a list of instructions
A general purpose computer has four main sections: the arithmetic and logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by busses, often made of groups of wires.
The control unit, ALU, registers, and basic I/O (and often other hardware closely linked with these) are collectively known as a central processing unit (CPU).
Early CPUs were comprised of many separate components but since the mid-1970s CPUs have typically been constructed on a single integrated circuit called a microprocessor.
Hardware
PROCESSOR RAM ROM HARDDISK FLASH MEMORY CACHE CD-ROM/CD-RW/DVD-ROM/DVD-RW CARDS MOTHERBOARD
