Computer Knowledge Test
The Tier 2 of SSC CGL has introduced the Computer Knowledge Test in Section 3 of Module 1. The Computer Knowledge Test will be for 60 marks. This can be a big game changer to increase the overall score of candidates as the number of questions is 20, i.e. 3 marks for each correct answer.
SSCADDA is here to help you with your preparation for SSC CGL Tier 2. We will be providing the topic-wise study notes on Computer daily so that candidates can score good marks in Computer Knowledge Test Section.
History of Computer
The word Computer in earlier times meant a person who performed calculations or computations. With years its definition changed to a machine that performs calculations. It can perform all type of mathematical and logical operations; it can accept data, store data, retrieve data, process data and produce output.
Charles Babbage is known as father of computer. He invented two machines in 1822 introduced Difference Engine and in 1834, introduced Analytical engine.
ENIAC was the first digital computer and it was invented by J.Presper Eckert and John Mauchly at the University of Pennsylvania and began construction in 1943. It uses 18000 vacuum tubes as a storing device. They were also founders of the first computer company, it was initially named Electronic Controls Company which was later changed to Eckert.
Mauchly Computer Corporation, and released a series of mainframe electronic digital stored-program computer under the name of UNIVAC.
MIT introduces the whirlwind machine (first computer with RAM) on March 8, 1955.
Look at the table below for the important inventions.
| Invention | Inventor | Description |
| Difference Engine | Charles Babbage | First automatic mechanical calculator |
| Analytical Engine | Charles Babbage | Mechanical general-purpose computer |
| Z1 | Konrad Zuse | World’s first freely programmable computer |
| MARK-1 | Konrad Zuse | First Freely programmable Computer |
| ENIAC | John W. Mauchly and J. Presper Eckert |
First general purpose programmable electronic computer |
| EDSAC | John von Neumann | First computer to store program |
| EDVAC | John W. Mauchly and J. Presper Eckert |
Binary serial computer |
| UNIVAC | John W. Mauchly and J. Presper Eckert |
First general-purpose computer for commercial use |
| Intel 4004 | Intel | First commercially available microprocessor by Intel, a 4-bit CPU |
| ARPANET | United States Department
of Defence |
Early packet switching network and the first network to implement the protocol suite TCP/IP. |
History of Computer: FAQs
Q. Who is the father of computer?
Ans. Charles Babbage is known as father of computer.
Q. What is the name of the first digital computer ?
Ans. ENIAC was the first digital computer.
Q. Who invented ENIAC, the first digital computer?
Ans. J.Presper Eckert and John Mauchly invented ENIAC at the University of Pennsylvania
Q. What is the name of the world’s first freely programmable computer?
Ans. The name of the world’s first freely programmable computer is Z1.
Q. What is the name of the first commercially available microprocessor?
Ans. The name of the first commercially available microprocessor is Intel 4004.
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