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

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