Generation Of Computers

HARDWAR E

Generation Of Computers • Actual Growth of this field happened around THIRTY YEARS • In 1940 as the FIRST GENERARION Computer was made up of VACUUM TUBES • In 1956 as the SECOND GENERARION Computer was made up of TRANSISTORS

• In 1964 as the THIRD GENERARION Computer was made up of IC’s • In 1971 as the FOURTH GENERARION Computer was made up of MICROPROCESSORS • In Present as the FIFTH GENERARION Computer was made up of ARTIFICIAL INTELLIGENCE

HARDWARE ???????

I-P-O • INPUT • PROCESSING • OUTPUT

COMPONENTS 

MOTHER BOARD

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RAM

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ROM

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FLOOPY

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CPU

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HARD DISK

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SMPS

Random Access Memory (RAM) It is a Primary Storage Device RAM is called as Scratch Pad Memory RAM is also said as Volatile Content of RAM are Lost when the computer is switched off TYPES Of RAM : DDR , RDRAM , SDRAM , DRAM

READ-ONLY-MEMORY (ROM) ROM also called as ROM-BIOS Instructions in ROM can be Executed but cannot be change ROM is also said to be an Non-Volatile

FLOPPY Floppy disk is called as Clamping Hole There are head slot and index hole It contain Read-Write-Head It is divided into a series of concentric circles called Tracks The floppy disk is divided into Double density & High density drives

CPU Brain of Computer CPU chips Responsible TYPES : Pentium 1 , Pentium 2 , Pentium 3 , Pentium 4 , Celeron ,

HARD DISK

SMPS