Created by Priya Soni 30/11/2011. Computers can be classified into five types according to the generations i.e. time period: First Generation Computers.

Download Created by Priya Soni 30/11/2011. Computers can be classified into five types according to the generations i.e. time period: First Generation Computers.

Post on 05-Jan-2016

215 views

Category:

Documents

0 download

Embed Size (px)

TRANSCRIPT

Generation of Computers

Created byPriya Soni30/11/2011

Generation of ComputersComputers can be classified into five types according to the generations i.e. time period:

First Generation ComputersSecond Generation ComputersThird Generation ComputersFourth Generation ComputersFifth Generation ComputersGeneration of ComputersPeriod: 1946-54Size: Size was equivalent to a roomLanguage: Machine and Assembly languageMain Component: Vacuum TubesInput/output Media: Punched cards & paper tapeStorage Media: Magnetic drum & Magnetic tape

First Generation Computers

Vacuum tube

Vacuum tubes

Observing Vacuum tube

Vacuum tube testerAdvantages : . It was only electronic device. First device to hold memory

Disadvantages : . Too bulky i.e. large in size. Vacuum tubes burn frequently. They were producing heat. Maintenance problems

First Generation ComputerToo bulky i.e. large in size

Vacuum tubes burn frequently

Maintenance problems

Period: 1955-64Size: Smaller than 1st generationLanguage: Assembly & high level languageMain Component: TransistorsInput/output Media: Punched cards & printed reportsStorage Media: Magnetic tape & magnetic disk

Second Generation ComputersTransistor

Transistor board

Second Generation ComputerAdvantages : . Size reduced considerably . The very fast. Very much reliable

Disadvantages : . They over heated quickly . Maintenance problems

Period: 1965-74Size: Disk size mini computersLanguage: High level languageMain Component: ICs (Integrated Circuits)Input/output Media: Key to tape, key to disk & printed reportsStorage Media: Magnetic tape & magnetic disk

Third Generation ComputersIC (Integrated Circuit)

ICs (Integrated Circuits)

IC (Integrated Circuit)Third Generation ComputerAdvantages : . ICs are very small in size . Improved performance . Production cost cheap

Disadvantages : . ICs are sophisticated

Period: 1975-89Size: Typewriter size micro computersLanguage: High level languageMain Component: ICs with LSI (Large Scale Integration)Input/output Media: Keyboard data entry, input devices & printed reportsStorage Media: Magnetic disk, floppy & optical disk

Fourth Generation Computers

ICs with LSI(Large Scale Integration)Fourth Generation ComputerAdvantages : . It is a compact. Less power consumption . Production cost is cheap

Disadvantages : . No artificial intelligent.

Period: 1990s- present & beyondSize: Credit card size micro computersLanguage: Artificial intelligence languageMain Component: SLSI/ULSI(Super/Ultra Large Scale Integration)Input/output Media: Tactile inputs, displaysStorage Media: Optical disk & card magnetic disk

Fifth Generation ComputersFifth Generation ComputerAdvantages : . Artificial intelligence. Expert system . Very low cost

. First generation computer. Second generation computer. Third generation computer. Fourth generation computer. Fifth generation computerVacuum tubesTransistors ICsICs with VLSIICs with parallel processing Thank You