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Generations of Computer

The document discusses the five generations of computers. The first generation used vacuum tubes and were unreliable, costly, and generated a lot of heat. The second generation used transistors which were cheaper, consumed less power, and were more compact and reliable. The third generation used integrated circuits which further improved efficiency. The fourth generation used very large scale integrated circuits while the fifth generation uses ultra large scale integrated circuits resulting in microprocessor chips with millions of components.

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Prashant Ji
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762 views9 pages

Generations of Computer

The document discusses the five generations of computers. The first generation used vacuum tubes and were unreliable, costly, and generated a lot of heat. The second generation used transistors which were cheaper, consumed less power, and were more compact and reliable. The third generation used integrated circuits which further improved efficiency. The fourth generation used very large scale integrated circuits while the fifth generation uses ultra large scale integrated circuits resulting in microprocessor chips with millions of components.

Uploaded by

Prashant Ji
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PPTX, PDF, TXT or read online on Scribd
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PRASHANT

BBA Z3
FUNDAMENTALS OF COMPUTERS
PRESENTATION
COMPUTER GENERATION

• So Generation in computer terminology is a change in technology a computer


is/was being used.
• Initially, the generation term was used to distinguish between varying
hardware technologies. But nowadays, generation includes both hardware
and software, which together make up an entire computer system.
• Each of the five generations of computers is characterized by a major
technological development that fundamentally changed the way computers
operate. Most major developments resulted in increasingly smaller, cheaper
and more powerful and efficient computing devices.
COMPUTER - FIRST GENERATION
• The period of first generation was 1946-1959

• The computers of first generation used vacuum tubes as the basic components for memory and circuitry for CPU
(Central Processing Unit).

• The main features of first generation are:

• Vacuum tube technology

• Unreliable

• Supported

• machine language only

• Very costlyo

• Generated lot of heat

• Slow input and output devices


COMPUTER - SECOND GENERATION

• The period of second generation was 19591965


• In this generation transistors were used that were cheaper, consumed less power, more
compact in size, more reliable and faster than the first generation machines made of
vacuum tubes.
• Some computers of this generation were:
• IBM 1620
• IBM 7094
• CDC 1604
• CDC 3600
• NIVACC 1108
COMPUTER - THIRD GENERATION
• The period of third generation was 1965-1971
• The computers of third generation used integrated circuits (IC's) in place of transistors.
• Some computers of this generation were:
• IBM-360 series
• Honeywell-6000 series
• PDP(Personal Data Processor)
• IBM-370/168 TDC-316
COMPUTER - FOURTH GENERATION
• The period of fourth generation was 1971-1980
• The computers of fourth generation used Very Large Scale Integrated (VLSI) circuits.
• Some computers of this generation were:
• DEC 10
• STAR 1000
• PDP 11 CRAY-1 (Super Computer)
• CRAY-X-MP(Super Computer)
COMPUTER - FIFTH GENERATION
• The period of fifth generation is 1980-till date.
• In the fifth generation, the VLSI technology became ULSI (Ultra Large Scale Integration)
technology, resulting in the production of microprocessor chips having ten million electronic
components.
• Some computer types of this generation are:
• Desktop
• Laptop
• NoteBook
• Ultrabook
• ChromeBook

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