describe various generation of computer?discussed by computer history.

describe various generation of computer?discussed by computer history.

HISTORICAL REVOLUTION-A BRIEF HISTORY the first computer was perhaps Abacus, developed around 650 B.C.. in china it consisted of beads str... 03:34

HISTORICAL REVOLUTION-A BRIEF HISTORY
the first computer was perhaps Abacus, developed around 650 B.C.. in china it consisted of beads strung on fixed parallel rods.
in 1942, blase pascal, a french mathematical developed the first mechanical calculator. in 1834, Charles Babbage built a mechanical calculator called difference engine and further developed the idea of analytically engine. Herman Hollerith, in the late nineteenth century, introduced punched card as a storage medium which were used to represent a record or a part of record. he developed what is called Hollerith code to represent alphabetical characters as combination of punched on 12 rows 18 columns cards.

MARK-1 developed by professor hardware Aiken in 1944 was the first successful digital computer. ENIAC (Electronic numerical integrator and calculator) was the first electronic digital computer and was designed in 1946 by john W. touchily and J. prepare Eckert. john Von Newman discussed the basis for the design of a computer in 1946. UNI VAC (universal automatic computer ) was the first electronic digital computer designed for commercial application.

COMPUTER GENERATION
since 1949, the computer technology has passed through various generations. computer designed and built 1949 to 1959 are generally described as first generation computers. these systems were large in size, expensive and were based on vacuum tubes. VNIVAS and EDVAC are example for first generation computers. computer built during 1959-64 are described as second generation computer. the technology was based on transistors. these computers were less expensive and smaller in size. for these computer systems, languages used were high level languages such as FORTRAN and COBOL.