generations of computers

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GENERATIONS OF COMPUTERS

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Page 1: Generations of computers

GENERATIONS OF COMPUTERS

Page 2: Generations of computers

1st Gen 1940-56

2nd Gen 1956-63

3rd Gen 1964-71

4th Gen 1971-

present

5th Gen Present & Beyond

Use of vacuum tubes

Use of transistor & diodes

Use of IC’s Use of LSI & VLSI

Use of IC’s with ULSI technology

Limited storage capacity

Increased storage capacity

Memory flexibility with i/p & o/p

Increased storage

Based on artificial intelligence

Enormous in size, Expensive

Faster speed Smaller in size& better performance

Faster & smaller

Larger storage capacity

Slow speed Reduced in size & heat generation

Extensive use of high level languages

Modular design , compatible

Support for more complex apps

Machine & assembly languages

High level programming languages

Remote processing & timesharing

Programs & languages for special applications

Still under development

Problems of overheating

COBOL & FORTRAN

Increased use of microcomputers