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[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Computers Digital Computers Analog Computers Hybrid computers Classification by nature
Digital Computers Use digits specially binary digits (0, 1) to  represent data Examples: Personal computers such as Laptops and Desktops, etc Computer Classification Classification by nature
Analog Computers Use physical magnitudes as voltage and pressure instead of digits Examples: Thermometers, voltmeters, speed measuring meters, etc  Computer Classification Classification by nature
[object Object],[object Object],[object Object],[object Object],Computer Classification Classification by nature
Computer Classification Classification by Purpose Special purpose computers General purpose computers Computers
[object Object],[object Object],[object Object],Computer Classification Classification by Purpose
[object Object],[object Object],[object Object],Computer Classification Classification by Purpose Can a general purpose computer  be converted to a special purpose computer ?
By   size Mainframe Minicomputers Microcomputers Supercomputer
[object Object],[object Object],[object Object],[object Object],[object Object],Computer Classification Classification by size
[object Object],[object Object],Computer Classification Classification by size
Computer Classification Classification by size ,[object Object],[object Object],[object Object],[object Object],[object Object]
 
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
programming - machine language
ENIAC - first generation computer vacuum tube 1942-1955
ENIAC - first generation computer vacuum tube 1942-1955
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Used primarily by business, university, government
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
transistor 1955-1964   second generation computer
= 40 1
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
1 1000
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
third generation computer integrated circuit 1975-1989
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
fifth generation computer microprocessor 1989 - today
IBM PC & COMPATIBLE 2007 1990
second vacuum tube transistor integrated circuit third first microprocessor fourth
 

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Classification and generations of computers