An electronic machine that is used for storing, organizing, and finding words, numbers, and pictures, for doing calculations, and for controlling other machines: a personal/home computer All our customer orders are handled by computer. We've put all our records on computer. computer software/hardware computer graphics a computer program
There are
three main types of computer
1) Analog computer
2) Digital computer
3) Hybrid computer
Analog computer:
Ø Analog computer
use electronic or mechanical phenomena
Ø Electronic
phenomena use
Ø Analog computer
gives its best in solving dynamic problems
Ø It simulating
complex physical system
Ø Analog computer
were widely used in scientific and industrial application
Ø Analog computer
can have a very wide range of complexity
Ø It used analog
computation to perform and control functions
Ø It contains high
speed computing elements
Ø Analog computer
used to simulate mathematical functions, physical system and dynamic processes
Ø Special purpose
analog computers ere the slide rule
Ø General purpose
analog computer were first built in 1930’s
Digital computer:
Ø Digital computer
operates on digital data such as numbers
Ø It uses binary
number system in which there are only two digits 0 and 1
Ø It perform
arithmetic & logical operations with discrete values
Ø These computer
are good to solve algebraic equation as well as manipulating number
Ø It have ability
to perform algebraic equation as well as data storage and for documentation
Ø The result can
be obtained in variety of forms (printed table, magnetic tape)
Ø Mostly used in
high accuracy and high volume numerical calculation
Ø In early
1940s, Aiken built the first general-purpose
digital computer called Mark-1
Ø Today digital
computer are widely used in business, education and hospital etc
Ø Examples of
digital computer are IBM PC, Apple Macintosh computer etc
Hybrid computer:
Ø Hybrid computer
are combination of analog and digital computers
Ø It uses
analog-to-digital & digital-to-analog conversion
Ø Dynamic problem
which difficult to handle, can be solved in reasonable period of time
Ø These computer
can produce highly accurate precise result
Ø These type of
computers used in robotics, medical labs etc
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