Page 22 - Viva ICSE Computer Studies 5 : E-book

• The fi rst fully functional electronic digital computer to be built in the US was Electronic
Numerical Integrator And Calculator (ENIAC).
• Scientists used vacuum tubes as processors in the fi rst generation computers.
• In the second generation computers, transistors were used as processors.
• Integrated circuits (ICS) were used in third generation computers.

• Microprocessors were integrated into the fourth generation computers.
• Fifth generation computing devices are based on artifi cial intelligence.
• A computer has speed, accuracy, versatility and capability to be programmed.
• A computer has certain limitations also.

A. Match the columns.
Column A Column B Column C
1. 1642 (a) 1671 (i) Blaise Pascal

2. Jacquard Loom (b) 1801 (ii) 1822
3. Leibniz Calculator (c) Pascaline (iii) Gottfried Leibniz
4. Analytical Engine (d) Mechanical- (iv) Punched cards
digital computer

5. Charles Babbage (e) Diff erence Engine (v) 1823

B. Choose the correct answer.
1. The fi rst generation computers were used between ____________.
(a) 1941 and 1955 (b) 1940 and 1956
(c) 1940 and1955 (d) 1940 and 1957

2. ____________ and ____________ are the third generation computers.
(a) IBM 370, NAV 7500 (b) IBM 704, IBM 1401

(c) ENIAC, UNIVAC (d) IBM 704, NAV 7500
3. Third generation computers used ______________________.

(a) microprocessor (b) vacuum tubes
(c) ICs (d) transistors

4. ____________ was the fi rst fully automatic calculator.

(a) Mark I (b) EDVAC
(c) UNIVAC (d) EDSAC

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