Class-IV-Solved Exercise:
Chapter-1 Evolution of Computer
1. Tick the correct option:
a. It was the first manual calculating device:
i. Pascaline ii. Abacus iii. ENIAC iv. Mark-I
Answer: Abacus
b. First general purpose electro mechanical computer developed:
i. ENIAC ii. Pascaline iii. Mark-I iv. Punch card
Answer: Mark-I
2. Tick the correct statement as T and F for false:
a. Napier Bone consists of number of rods, perform multiplication and division. T
b. First generation computers used integrated circuit. F
c. Processor stores the data which may be used again in future. F
d. Difference engine was designed by Charles Babbage. T
3. Fill in the blanks:
a. __________ is also called adding machine.
Answer: Pascaline
b. Difference engine computes _________ for navigation purpose.
Answer: Design
c. There are total__________ generations of computer.
Answer: Five
4. Name the following:
a. First manual calculating machine.
Answer: ABACUS
b. First calculator.
Answer: PASCALINE
c. First general purpose electro mechanical computer.
Answer: MARK-I
d. Father of computer.
Answer: Charles Babbage
5. Answer the following questions:
a. Why did the size of computer in every successive generation decrease?
Answer: The size of computers in the successive generations is decreasing gradually, this is because in every new generation new component was used and it finally reduced the size of the computer.
b. List all the generations of computer.
Answer:
1. First generation computer(1942-1955)
2. Second generation computer(1956-1965)
3. Third generation computer(1966-1975)
4. Fourth generation computer(1976-1985)
5. Fifth generation computer(1986- till date)
c. Give the use of memory unit.
Answer: Memory unit is used for store the data in the computer system. Memory is divided into two parts: Primary memory and Secondary memory.
6. Do as directed:
a. Name the major components of :
i. Abacus ii. Napiers iii. Pascaline
Answer:
i. Components of Abacus: 1. Rods, 2. Beads/Balls
ii. Components of Napiers: 1. Rods called Napier's Bone.
iii. Components of Pascaline: 1. Toothed Wheel and Gears.
b. Write the features of :
i. Ist generation computers ii. Vth generation computer.
Answer:
i. Ist generation computers: ENIAC, EDSAC
ii. Vth generation computers: Robots.
7. Write the full forms of:
a. ATM b. MIPS c. IC d. LSI e. VLSI f. ULSI
Answer:
a. Automated teller machine
b. Microprocessor without interlocked Pipelined Stages
c. Integrated Circuit
d. Large scale integration
e. Very large scale integration
f. Ultra large scale integration
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