Generation of Computer (11)

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 Key Points to remember in Generation of computer

Date

Main Component

Programming Language

Main Memory

I/O Device

First

1940-1956

Vacuum Tube

Machine Language

Magnetic Tapes, Magnetic drums

Paper Tape, Punched Card

Second

1956-1963

Transistor

Machine Language , Assembly Language

Magnetic Core, Magnetic tape/disk

Magnetic Tape, Punched Card

Third

1964-1971

Integrated Circuit

High-Level Language

Large magnetic core, Magnetic tape/disk

Magnetic tape, monitor, keyboard, printer

Fourth

1971---

Microprocessor, VLSI

High Level Language

Semiconductor memory (RAM, ROM)

Pointing, optical scanning, keyboard, mouse, monitor, printer

Fifth

Future

Bio-chip, ULSI

 

 

 

 
Processing Speed: First (Millisecond), Second (Microsecond), Third (Nanosecond), Fourth (Picosecond), Fifth (Femtosecond).

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