Computers today are long evolution of human invention since the first form of mechanical and electronic equipment. Divided into four major categories of data processing devices :
Equipment Manual : data processing equipment is very simple, and tepenting factor in the use of the tool is to use the power of human hands.
Mechanical Equipment: That equipment has been shaped mechanical driven manually by hand.
Electronic Mechanical Equipment: Equipment mechanically actuated automatically by the electronic motor.
Electronic Equipment: Equipment that works full electronic.
Computers that we know today has evolved from the first generation that uses Vacuum Tubes, followed by a second generation that uses transistors, followed by the third generation of replacing transistors with IC and eventually replaced by the last generation using VLSI.
General Purpose Computer have 4 main components :
- Main memory: Serves to store data and instructions
Main memory
- ALU (Arithmatic Logic Unit) : Used to perform arithmetic operations.
Arithmatic Logic Unit
- Control Unit : Interpret instructions in memory and run it.
Control Unit
- I/O (Input/Output) : The device is operated by a control unit.
I/O
The evolution of computers from generation to generation visible imprint on increased processor speed, reduced component size, memory capacity and increased speed and capacity of I / O.
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