Generation of Computer
Generation” in computer talk is a new step in hardware or software technology.
Different generations of computer are as follows:
Generation
Technology
Description
1st Generation
(1942-1955)
Vacuum Taube
Vacuum tubes (fragile glass device) were the only electronic component available during those days that possible to make electronic digital computer.
These computers can calculate data in millisecond; these were very large in size.
Examples: UNIAC, EDVAC, EDSAC
2nd Generation
(1956-1964)
Transistor
The transistor (Solid State Device) a smaller and more reliable successor to the vacuum tube was invented in 1947
Faster in speed from the previous computers. These computers were able to reduce computational time from milliseconds to microseconds.
Examples: UNIVAC III, SS80, SS90, 1107
3rd Generation
(1964-1975)
Integrated Circuits
Advance “Microelectronic” technology made it possible to integrate larger number of circuit elements into very small (less than 5 mm square) surface of silicon know as Chip or Integrated Circuit(IC). The use of IC in place of transistors gave birth of new generation. they were able to reduce computational time from microseconds to nanoseconds Examples: IBM System/360 Series
4th Generation
(1975-Present)
VLSI
Small Scale Integration (SSI) contains ten to twenty ICs components. Medium Scale Integration (MSI), which has hundreds of integrated components in a single chip. Large Scale Integration (LSI) possible to integrate 30,000 components into a single chip. Very Large Scale Integration (VLSI) contains one million components integrated on a single chip.
Generation” in computer talk is a new step in hardware or software technology.
Different generations of computer are as follows:
Generation
Technology
Description
1st Generation
(1942-1955)
Vacuum Taube
Vacuum tubes (fragile glass device) were the only electronic component available during those days that possible to make electronic digital computer.
These computers can calculate data in millisecond; these were very large in size.
Examples: UNIAC, EDVAC, EDSAC
2nd Generation
(1956-1964)
Transistor
The transistor (Solid State Device) a smaller and more reliable successor to the vacuum tube was invented in 1947
Faster in speed from the previous computers. These computers were able to reduce computational time from milliseconds to microseconds.
Examples: UNIVAC III, SS80, SS90, 1107
3rd Generation
(1964-1975)
Integrated Circuits
Advance “Microelectronic” technology made it possible to integrate larger number of circuit elements into very small (less than 5 mm square) surface of silicon know as Chip or Integrated Circuit(IC). The use of IC in place of transistors gave birth of new generation. they were able to reduce computational time from microseconds to nanoseconds Examples: IBM System/360 Series
4th Generation
(1975-Present)
VLSI
Small Scale Integration (SSI) contains ten to twenty ICs components. Medium Scale Integration (MSI), which has hundreds of integrated components in a single chip. Large Scale Integration (LSI) possible to integrate 30,000 components into a single chip. Very Large Scale Integration (VLSI) contains one million components integrated on a single chip.
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