*g. What are the basic differences between the four generations of computers? Give two examples of the
first-generation computers.
Answers
Answer:
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Explanation:
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Explanation:
FIRST GENERATION
Introduction:
1946-1959 is the period of first generation computer.
J.P.Eckert and J.W.Mauchy invented the first successful electronic computer called ENIAC, ENIAC stands for “Electronic Numeric Integrated And Calculator”.
Few Examples are:
ENIAC
EDVAC
UNIVAC
IBM-701
IBM-650
…
Advantages:
It made use of vacuum tubes which are the only electronic component available during those days.
These computers could calculate in milliseconds.
Disadvantages:
These were very big in size, weight was about 30 tones.
These computers were based on vacuum tubes.
These computers were very costly.
It could store only a small amount of information due to the presence of magnetic drums.
As the invention of first generation computers involves vacuum tubes, so another disadvantage of these computers was, vacuum tubes require a large cooling system.
Very less work efficiency.
FOURTH GENERATION
Introduction:
1971-1980 is the period of fourth generation computer.
This technology is based on Microprocessor.
A microprocessor is used in a computer for any logical and arithmetic function to be performed in any program.
Graphics User Interface (GUI) technology was exploited to offer more comfort to users.
Few Examples are:
IBM 4341
DEC 10
STAR 1000
PUP 11
… and many more
Advantages:
Fastest in computation and size get reduced as compared to the previous generation of computer.
Heat generated is negligible.
Small in size as compared to previous generation computers.
Less maintenance is required.
All types of high-level language can be used in this type of computers.
Disadvantages:
The Microprocessor design and fabrication are very complex.
Air conditioning is required in many cases due to the presence of ICs.
Advance technology is required to make the ICs.