CBSE Class 9 Computer Science Introduction to Computers MCQs Set B

Question: In 1890 Herman Hollerith developed the first electro-mechanical ………………..tabulator.
a) keyboard
b) punched card
c) geared
d) slide rule
Answer: b

Question: ………….. Produced a machine that was similar to Pascal but more reliable and accurate.
a) Von Leibniz
b) Napier
c) Von Neumann
d) Pascal
Answer: a

Question: History of computers starts out about ………….. years ago
a) 4000
b) 5000
c) 50000
d) 3000
Answer: b

Question: A computer is an electronic device that processes ———- and converts it into …………….
a) document, information
b) data, information
c) information, process
d) data, sequence
Answer: b

Question: … and …. can be stored in the same memory. Thus the machine can itself alter either its program or internal data.
a) data, information
b) data and program
c) data, software
d) data, hardware
Answer: b

Question: ———————- are a way of communicating with the computer.
a) natural language
b) high language
c) human language
d) computer language
Answer: d

Question: The major drawback of ————— was that it had to be programmed manually by setting switches and plugging and unplugging cables.
a) ENIAC
b)EDVAC
c) UNIVAC
d) ANSII
Answer: a

Question: People used the concept of logarithms to develop the ………………… rule.
a) addition
b) slide
c) counting
d) calculating
Answer: b

Question: Charles Babbage designed an automatic mechanical calculating machine called a …………….
a) Variation engine
b) Analytical engine
c) computer engine
d) Difference engine
Answer: d

Question: Babbage constructed fully program controlled, automatic mechanical digital computer called
a) Difference Engine
b) Calculating Engine
c) Variation Engine
d) Analytical engine
Answer: d

Question: John Napier a Scottish mathematician created ……………… tables to facilitate calculations.
a) Numeric
b) mathematical
c) logarithmic
d) tabular
Answer: c

Question: ………… and …………….. were the first commercially available computer.
a) EDVAC, UNIVAC
b) EDVAC, ENIAC
c) EDSAC, UNIVAC
d) EDVAC, ANSII
Answer: a

Question: Pascal calculators were not accepted commercially just because of lack of ………….. for practical use.
a) digits
b) precision
c) correction
d) numbers
Answer: b

Question: Pascal invented the machine that has the system of ………
a) Gears
b) steps
c) boxes
d) circuits
Answer: a

Question: Analytical engine was supposed to operate automatically by ……………. And require only one person.
a) Electricity
b) Water
c) Steam power
d) automatic
Answer: c

Question: Punch cards were used by ………………
a) Napier
b) Hollerith
c) Pascal
d) John Neumann
Answer: b

Question: John Napier created a device using ………… to perform arithmetic calculations.
a) rods
b) beads
c) Wires
d) CPU
Answer: a

Question: Difference Engine was designed in ……………..
a) 1822
b) 1852
c) 1842
d) 1832
Answer: a

Question: First computer developed for commercial use was…………………….
a) ENIAC
b) EDVAC
c) UNIVAC
d) ANSII
Answer: c

Question: Vacuum tubes were used in ————— generation of computers.
a) 3rd
b)2nd
c) 1st
d) 4th
Answer: c

Question: The most important computers of first generation were————–and ——————.
a) ENIAC and UNIVAC
b) ENIAC & EDVAC
c) EDVAC & UNIVAC
d) ENIAC and ANSII
Answer: a

Question: Set of instruction to solve any kind of problem is called …………………..
a) computer program
b) code
c) software
d) information
Answer: a

Question: In —————very large scale integration (VLSI) became more and more common.
a) 1980‟s
b) 1990‟s
c) 1950‟s
d) 1970‟s
Answer: a

Question: Stored program technique was invented by ……………………
a) Von Neumann
b) Napier
c) Mauchley
d) Bill-gates
Answer: a

Question: ENIAC was a decimal rather than a ——————- machine.
a) Binary
b)Digital
c) Low Level
d) High Level
Answer: a

Question: ENIAC consumed———-kilowatts of power and was capable of doing ——— additions.
a) 150,5000
b)130,4000
c) 140,5000
d) 140,4000
Answer: c

Question: Computers run ………. Which process data and perform tasks based on the instructions contained in the program.
a) CPU
b) program
c) Machine
d) data
Answer: b

Question: Slide rule was used till the middle …………
a)70‟s
b)60‟s
c) 80‟s
d) 50‟s
Answer: a

Question: Printing books and tracking inventory are some examples of …………………. Applications
a) computer
b) calculator
c) programming
d) Hardware
Answer: a

Question: In 1981, IBM called its first microcomputer the——————
a) IBM-360
b) IBM-PC
c) Mark-1
d) none of the above
Answer: b

Fill in the Blanks

Question: AI stands for_________________________________________.
Answer: artificial Intelligence

Question: PROLOG stands for________________________________
Answer: Programming In Logic

Question: A slide rule consists of two scales __________ and__________.
Answer: (i) The Rule (ii) The Slide

Question: Napier’s idea of logarithm gave birth to another very useful and commonly used calculating device called________
Answer: Slide Rule

Question: HLL stands for _________________ .
Answer: High Level Language

Question: ICs stand for___________
Answer: Integrated Circuits

Question: An______computer accepts data in continuous or physical form.
Answer: analog

Question: The__________ unit of analytical engine was used to store the numbers fed to the machine and also those numbers that were generated during the process of problem solving.
Answer: Store

Question: The __________is an example of an analog-processing device, which means that the numbers are represented by position on a scale rather than by digits.
Answer: Slide Rule

Question: The lifetime project of Charles Babbage was to build a new machine known as ___
Answer: analytical Engine

Question: In third generation computers were used instead of transistors
Answer: Integrated Circuits

Question: _____________are the largest, fastest and most expensive computers developed to solve the complicated problems.
Answer: Super Computers

Question: There are four main types of computers depending upon the size and speed of the computer which are 1)________2)________3)___________4)___________.
Answer: Supercomputers, Mainframe Computers, Minicomputers, Microcomputers

Question: There are three categorizers of computers depending upon the design and technology 1)______2)______3)________.
Answer: analog Computers, Digital Computers, and Hybrid Computers

Question: Analytical engine was consisted of five units i)______ii)_______ iii)_______ iv) _______v)_______.
Answer: Store, Mill, Control, Input, Output