Have you ever wondered which genius mind on this earth thought of inventing such useful device for the mankind? It all started with one simple tool we all have heard about, The Abacus! With respect to class 6 History and Generation of Computers, let us study how and when did it led to the invention of computers.
Computers have evolved and advanced significantly over the decades since they were invented. The history of computer development is grouped into different generations of computer. A generation refers to the change in technology. The computers are classified into five generations based upon the change in architecture, languages, modes of operation, etc. They are:
First Generation Computer (1940-1956)
The first generation computers were used during 1940-1956. They were based on vacuum tubes.
Characteristics of First Generation computers are:
Examples of First Generation computers are: ENIVAC and UNIVAC-1.
Second Generation Computer (1957-1963)
As transistors developed, it helped in generating computers better than First Generation.
Characteristics of Second Generation computers are:
Examples of Second Generation computers are IBM 1920, IBM 1401, etc.
Third Generation Computer (1964-1971)
During the period of 1964 to 1971, Third generation computers were developed.
Characteristics of Third Generation computers are:
Examples of third generation computers are IBM-360 series, CDC 1700, etc.
Fourth Generation Computer (1972 onward)
The computers that we use for daily purposes are from the Fourth Generation.
Characteristics of Fourth Generation computers are:
Examples of Fourth generation computers are CRAY- 1, Apple, etc.
Fifth Generation Computer (Present and future)
Fifth Generation computers are still in development.
Characteristics of Fifth Generation computers are:
Examples of Fifth generation computers are IBM notebooks, PARAM 10000, etc.
Ans: Charles Babbage in 1833.
Ans: First Generation.
Ans: Third Generation.
On the basis of size, Computers are divided into four categories. They are -
A supercomputer is a computer which has a high level of performance. They are very expensive, very fast, and the most powerful computers. They have a large storage capacity. They can perform a large number of calculations in a fraction of a second.
Supercomputers are used for several fields. Some of them are -Space Exploration, Earthquake studies, Weather Forecasting, etc.
Example of supercomputers are: IBM Sequoia , PARAM, PACE, etc.
A mainframe computer is a powerful computer used in many large organizations that need to manage a large amount of data. They have less processing speed and storage capacity as compared to supercomputers. Mainframe computers can process complex mathematical calculations.
Example of mainframe computers are: ICL39, CDC 6600, VAX 8842 System z9.
Minicomputers are also known as “Midrange Computers". Minicomputers are multiuser computers where many users can simultaneously work on the computers. They have less storage capacity than mainframe computers. They are smaller in size. Minicomputers are used in university, large business, scientifically researched.
Examples of minicomputers are PDP-11, VAX, 7500 MAGNUM etc.
Microcomputers are also referred to as Personal computers. They are a type of computers designed for single user tasks. They are small in size and are the cheapest. They are easy to operate.
Microcomputers are widely used in educational institutes, home, etc.
Examples of microcomputers are IBM PC, Apple, etc.
Ans: Personal computers.
The full form of ENIAC is:
|a)||Electronic Numerical Integrator and Calculator|
|b)||Electrical Numerical Integrator and Calculator|
|c)||Electronic Numerical Integrator and Circuit|
|d)||Electrical Numerical Integrator and Circuit|
The full form of UNIVAC is:
|a)||Universal Automatic Calculator|
|b)||Universal Automatic Computer|
|c)||Universal Automatic Circuit|
|d)||Universal Automatic Chip|
ENIAC was invented by:
Both a and b
Which generation of computers relied on machine language?
What was the setback of the first generation computers?
|b)||high electricity consumption|
|c)||huge in size|
|d)||all of them|
What was the period of Second generation computers?
The second generation computers relied on:
What was the advantage of transistors over vacuum tubes?
|a)||reduced heat dissipation problem|
|d)||all of these|
Which generation of computers relied on assembly language?
Which was the high level programming languages being developed in second generation?
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