Class 5 :: Computer Studies :: Evolution of Computers (Primary Computer Studies)
Evolution of Computers
(Primary Computer Studies)
ASSESSMENT ZONE
1. Tick (✓) the correct answer.
a. Which of the following is the first calculating device?
i. Abacus. [✓]
ii. Difference Engine. [ ]
iii. Jacquard's Loom. [ ]
b. Which of the following was the first mechanical calculator?
i. Napier's Bones. [ ]
ii. Jacquard's Loom. [ ]
iii. Pascaline Calculator. [✓]
c. Who is called the father of computers?
i. John Napier. [ ]
ii. G.W. Leibniz. [ ]
iii. Charles Babbage. [✓]
d. Where was the abacus invented?
i. India. [ ]
ii. China. [✓]
iii. Russia. [ ]
e. Who is known as the world's first Lady programmer?
i. Lady Ada Lovelace. [✓]
ii. Charles Babbage. [ ]
iii. Lady Maryvv. [ ]
f. Who developed the Analytical Engine?
i. John Napier. [ ]
ii. Charles Babbage. [✓]
iii. Pascal. [ ]
2. State whether the following statements are true (T) or false (F).
a. Abacus was the first calculating device. [T]
b. Napier's Bones was invented by Blaise Pascal. [F]
c. Blaise Pascal invented the Pascaline. [T]
d. Sir John is called the Father of Computers. [F]
e. Charles Babbage invented the first mechanical computers. [T]
3. Name the inventor of the following machines.
a. Pascaline = Blaise Pascal.
b. Difference Engine = Charles Babbage.
c. Jacquard Loom = J.M. Jacquard.
d. Leibniz's Calculator = Gottfried Wilhelm Von Leibniz.
4. Match the following correctly.
=
a. Ada Lovelace. | i. Difference Engine. [c] |
b. Blaise Pascal. | ii. First mechanical calculator. [d] |
c. Charles Babbage. | iii. First computer programmer. [a] |
d. Gottfried Wilhelm. | iv. Napier’s Bones. [e] |
e. John Napier. | v. Pascaline. [b] |
5. Answer the following questions.
a. Name the first calculating device.
= The name of the first calculating device is Abacus.
b. Name the first mechanical calculator. Who invented it?
= The name of the first mechanical calculator is Pascaline.
Blaise Pascal, who was a French mathematician, invented it.
c. Who invented Napier's Bones?
= Scottish mathematician, John Napier invented a calculating device called Napier's Bones.
d. What did Blaise Pascal invent? What was the purpose of the invention?
= Blaise Pascal invented Pascaline.
It had a box with eight movable wheels called dials. The numbers for calculations were entered with dials. It could add and subtract only.
e. Name the computer developed by Howard H. Aiken.
= The name of the computer developed by Howard H. Aiken is Harvard Mark I.
f. What are the limitations of a computer?
= Computer is an electronic machine. It has some limitations. They are :-
❐ Zero IQ44 : A computer is a dumb machine. It can not do anything on its own. It does not have any IQ (Intelligence Quotient).
❐ Lack of Decision-making power :- A computer needs instructions from someone (user). When an unexpected situation arises, it gives incorrect results or abandons the job altogether.
❐ Needs Electricity : Computer needs electricity to work.
❐ No Heuristics : Heuristics is the ability to learn form the past mistakes. A computer cannot care for itself like a human does.
Activity Zone
Solve the following puzzle and find the answers in the word grid given.
a. Machine made by Blaise Pascal.
= Pascaline.
b. First calculating device.
= Abacus.
c. Modern age computer that is placed on the desk.
= Desktop.
d. First most successful electronic computer.
= ENIAC.
e. Programming language, is named in honour of the countess Ada Lovelace.
= ADA.
f. Modern age computer that is portable in size and have touch screen and a virtual keyboard.
= Tablet.
