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21. Second generation of computers consist of which of following?
A. Vaccum Tubes
B. Diodes
C. VLSI Microprocessor
D. Transistors
ANSWER: D
SOLUTION: Second Generation computers are also called Transistor computers in which the discrete transistors are the major hardware used for computing. Transistors are solid-state devices, that replaced vacuum tubes (First generation computers) in functionality.
22. Herman Hollerith developed a machine called ____.
A. Pascaline
B. Analytical engine
C. Census Tabulator
D. Tabulating Machine
ANSWER: D
SOLUTION:The tabulating machine was an electromechanical machine designed to assist in summarizing information stored on punched cards. Invented by Herman Hollerith.
23. The First Mechanical Computer Designed by Charles Babbage was called ____.
A. Supercomputer
B. Abacus
C. Calculator
D. Analytical engine
ANSWER: D
SOLUTION:Analytical Engine is the first mechanical computer and designed by Charles Babbage, a British mathematician and philosopher.
24. Microprocessors as switching devices are which generation of computers?
A. First generation
B. Second generation
C. Third generation
D. Fourth generation
E. Fhift generation
ANSWER: D
SOLUTION:Microprocessors as switching devices are for fourth generation computers .
25. Third-generation of computers was based on which technology?
A. Transistors
B. IC Chip
C. VLSI
D. Vacuum Tube
ANSWER: B
SOLUTION:Third-generation computers used integrated circuits in place of transistors. With the use of integrated circuits, these computers became reliable, generated less heat, were small in size, fast, very less maintenance, and were inexpensive.
26. Batch processing OS was mainly used in this generation.
A. 1st
B. 2nd
C. 3rd
D. 4th
ANSWER: A
SOLUTION:Batch processing was mainly used in the 1st generation.
27. Which is the earliest calculating device?
A. Calculator
B. Abacus
C. Difference engine
D. Analytical engine
ANSWER: B
SOLUTION:The earliest recorded calculating device is the abacus.
28. Pascaline is also known by ____.
A. Abacus
B. Adding machine
C. Division machine
D. Difference machine
ANSWER: B
SOLUTION:The Pascaline was designed and built by the French mathematician-philosopher Blaise Pascal between 1642 and 1644. It could only do addition and subtraction, with numbers being entered by manipulating its dials.
29. First generation computers were based on ____.
A. Transistors
B. Conductors
C. ICs
D. Vacuum tubes
ANSWER: D
SOLUTION: A vacuum-tube computer, now termed a first-generation computer, is a computer that uses vacuum tubes for logic circuitry.
30. Who developed the basic architecture of the computer ?
A. John Von Neumann
B. Charles Babbage
C. Blaise Pascal
D. Garden Moore
ANSWER:A
SOLUTION: The von Neumann architecture—also known as the von Neumann model or Princeton architecture—is a computer architecture based on a 1945 description by John von Neumann, and by others, in the First Draft of a Report on the EDVAC.