Generation of computer - ARTICLES

Generation of computer

GENERATION OF COMPUTER

Charles Babbage:-professor of mathematics at cambrige university,England in 1822 designed an automatic calculating machine called the 'Difference Engine'.

First generation of computer

Year 1945-1956
Internal device vacuum tubes
Speed millisecond
Storage capacity 1kb to 4kb
Programing language machine language
Input-Output device I/P:-punch card
O/P:-print out
Size Extramural large
Post expansive
Consume power consume lost of electrical power
Accurancy & Reliability no level
example UNIVAC(Universal Automatic Computer)
ENIVAC(Electronic Numerical Integrator and computer)

Second generation of computer

Year 1956-1956
Internal device transistors
Speed microsecond
Storage device magnetic tap
Programing language Assembly and high level(FORTRAN)
Input-Output device I/P:-punch card
O/P:-print out
Size Smaller then first g.
Post cheper then first
Consume power consume less power then first
Accurancy & Reliability more than first g.
example IBM1620
IBM1401

Third generation of computer

Year 1964-1971
Internal device Ic chip[integrated circuit]
Speed nanosecond
Storage device magnetic disc(hard disc)
Programing language high level(BASIC)
Input-Output device I/P:-punch card
O/P:-print out
Size smaller then second g.
Post chepar then second g.
Consume power consume less power then second g.
Accurancy & Reliability more than second g.
example IBM360
IBM370

Fourth generation of computer

Year 1971-1990
Internal device LSI OR VLSI
Speed million instruction persecond
Storage device hard disc
Programing language high level(c,java,php)
Input-Output device I/P:-punch card
O/P:-print out
Size smaller than third g.
Post chepar than third g.
Consume power consume less power then third g.
Accurancy & Reliability more then third g.
example IBM PC,APPLE

Fifth generation of computer

Year 1990 onward
Internal device ULSI
Speed will be extremely high
Storage device bio chip
Proggraming language natural language
Input-Output device -
Size -
Post -
Consume power -
Accurancy & Reliability -
example -