Computer Appreciation
Computer is an electronic Device
which is capable of receiving information (data) in a particular form and of
performing a sequence of operations in accordance with a predetermined but
variable set of procedural instructions (program) to produce a result in the
form of information or signals.
In general, a computer is a
digital electronic device which accepts data, processes it and gives
information as output. It has several components like Monitor, CPU, Mouse,
Processor, Memory etc.
History of Computer
History of computer can be
considered form arise of human culture as person knew the calculation, they
used something for this purpose like, pebbles, etc. but as device Roman’s
abacus is first device used in B.C. calculation. In A.D. various mechanical
devices were invented for the calculation like Pascaline by Blasé Pascal,
Joseph Jacquard invented loom that is ‘programmed “using punched cards, Charles
Babbage invented two machines Analytical engine and Difference engine and Hollerith’s
Census Machines (Tabulating machine). Atanasoff-Berry Computer (ABC) is a fully
digital electronic device used for liner equation. Howard Aiken (IBM) had
designed Mark first, the first operational general-purpose electro-mechanical
Computer. John Mauchley and presser Eckert make the Electronic Numerical
Integrator and Calculator (ENIAC) First general purpose digital electronic
Computer used to compute a ballistic firing. Universal Automatic Computer (UNIVAC
FIRST), was the first commercially successful Computer. Two Era arises
Mechanical Era (Before 1945) having mechanical devices and the Electronic Era
(Form 1945) having electronic Processing technology. Electronic Era is divided
into Four generations.
Generations of Computer
Computers are divided in these
forms of generations. Here the generations have been described time wise as
well as technologies used.
First Generations (1945-1954)
In the very first generations of
computers, it had been used Vacuum tube technology which makes a computer
possible to do calculations.
Second Generations (1955-1964)
In this generation segment of
computers, it had been used Transistors which made a computer a little concise
and faster to do same.
Third Generations (1965-1974)
In this third generation of
computers, it had been used Integrated circuits which made this faster
comparatively and reliable as well.
Fourth Generations (1975-Till Date)
In this generation of computers,
there had been used micro processors inside to work far better comparatively.
This is the most reliable among and very concise in size to be portable
anywhere you want.
Fifth Generations (Present and Next)
This is the generations of
computers where computers are assigned automatic intelligence; they use
artificial intelligence where they will use their own IQ too to solve a problem
at end.
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