Computer Hardware

The word computer comes from the word compute which means to calculator so computer is normally considered to a calculating device, which perform arithmetic operations at enormous speed .It is a programmable machine. This means it can execute a programmed list of instructions and respond to new instructions  that is given.

computer generations

·        ENIAC-Electronic Numerical Integrate and calculator.

·        EDVAC- Electronic Discrete variables automatic computer.

·        UNIVAC- Universal Automatic Computer.

·        BINAC- Binary Automatic Computer.

Functional block of computer

·        Input

·        Memory

·        Arithmetic And Logic

·        output

·        Control unit

Classifications of computer

·        Micro computer

·        Mini computer

·        Mainframe

·        Super computer