MOTHER TERESA SR. SEC. CO-ED SCHOOL
CLASS V (Computer Science) 2017-18
CHAPTER-1 :
GENERATION OF COMPUTER
Q1. Multiple Choice Questions
1) 1st Generation computer
a) ENIAC
b) Difference engine
c) Mark-I
2) First Known computing device is
a) ENIAC
b) Abacus
c) Difference engine
3) Charles Babbage was a _______.
a) Film star
b) Mathematician
c) Lawyer
4) 1st Generation of computers used _______for memory.
a) Magnetic drums
b) Punched cards
c) ICs
5) History of computers &_____of computers are two different aspects.
a) Generation
b) Evolution
c) Technology
6) The Intel 4004 was the first ____.
a) Memory
b) Microprocessors
c) Vacuum tubes
Q2. Fill in the blanks with suitable words.
1) A Generation refers to the advancements in computer technology.
2) It is believed that there are five generation of computers.
3) The first generation computers used magnetic drums for memory.
4) The second generation computers used assembly language.
5) 2nd generation were the first computers that could store instructions in the memory.
6) The fourth generation of computers has led to the emergence of the Internet.
7) In 5th generation of computers, the emphasis is to develop Intelligent machines.
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Q3. Write two examples against each generation of computers.
1) First generation computers
UNIVAC , ENIAC
2) Second generation computers
NCR304, IBM 605
3) Third generation computers
Burroughs 6700, Honeywell 200
4) Fourth generation computers
HP 9000, IBM PC
Q4. Write the full forms of the following :
1) UNIVAC - Universal Automatic computer
2) ENIAC - Electronic Numerical Integrator and Calculator
3) ICs
- Integrated Circuits
4) AI
- Artificial Intelligence
Q5. Very Short Answer
1) How many generation of computers are there?
Ans. There are 5 generation of computers.
2) What is AI?
Ans. The Artificial Intelligence (AI) is believed to be the Key feature behind fifth
generation of computers.
3) In which generation of computers Microprocessors is used?
Ans. Microprocessors are being used in the Fourth generation computers.
4) What does the term generation refers to computers technology ?
Ans. Generation refers to the advancements in computer technology.
5) What is Abacus?
Ans. Abacus is a first known calculating device.
Q6. Short Answer
1) Write the time period of Generation of computer.
Ans. 1st G
-
1946- 1958
2nd G -
1959-1964
2
3rd G -
1965-1971
4th G -
1971Onward
5th G -
Present and Beyond
2) Write the name of material used in all four generation of computers.
Ans. The name of material used in all four generation of computers are :
1st G – vacuum tubes
2nd G – Transistors
3rd G – Integrated Circuits(ICs)
4th G - Microprocessor
3) Brief on Generation of computer.
Ans. A generation refers to the advancements in computer technology. Each
generation of computer is characterized by a major technological development.
With each new generation, the computers became increasingly smaller,
cheaper, powerful and more efficient.
4) Brief on 1st Generation of computers.
Ans. The time period of 1st Generation of computers is from 1946 to 1958. They
used vacuum tubes for electronic circuitry and magnetic drums for memory.
They were very expensive and used huge amount of electricity.
Q7. Long Answer
1) Mention any three characteristics of 3rd and 4th G of computers?
Ans. 3rd Generation :
i) Used ICs(Integrated circuits)
ii) Efficiency and speed increased.
iii) Different applications could run simultaneously. Eg: Honeywell 200
4th Generation:
i) Used Microprocessor
ii) Smaller in size than 3rd G computers.
iii) Could be lined together to form computer network and has led to the
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emergence of Internet.
Eg : HP 9000
2) Differentiate between 1st and 2nd G of computers.
Ans.
1st G Computers
2nd G Computers
1. Used vacuum tubes
1. Used transistors.
2. Used magnetic drums for
memory.
2. Used punched cards for storage.
3. Were cheaper, faster and smaller.
3. Were expensive, slow and
larger.
3) What are the major characteristics of 5th G of computers?
Ans. 5th Generation computers are believed to think and act like humans. The
emphasis is to develop intelligent machines. The goal of 5th G is to develop
devices that respond to natural language input and are capable of self-learning
and self-organization.
Q8. Draw the following :
a) Transistor (Pg.no.6)
b) ICs (Pg.no.7) c) Microprocessor (Pg.no.7)
Q9. Application Based Questions
1) Before 1960’s is it possible to travel in the space without the invention of
transistors? If it is then Why?
Ans. No, it is not possible as first computer of this generation(2 nd G) were
developed for the atomic energy industry.
2) If you are not using 5th Generation computer, how it will affect you?
Ans. If we will not use 5th G computer, we can not take the advantage of key
feature of this generation i.e Artfificial Intelligence(AI), a system capable of
responding to natural language input, self-learning and self-organisation;
which think and act like humans.
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MOTHER TERESA SR. SEC. CO-ED SCHOOL
CLASS V (Comp Sc.) 2017-18
CHAPTER-2 : COMPONENTS OF COMPUTER
Q1. Multiple Choice Questions
1) A computer is a _______.
a) Machine
b) Juicer c) None of these
2) The _____ unit refers to the devices, using which you can interact with the
computer
a) Input
b) Output
c) Processing
3) The ____ unit controls all the activities of the computer.
a) Input
b) Control
c) Output
4) A computer is primarily made up of ____ types of units.
a) One
b) Two
c) Three
5) A _____ is used to draw pictures and select objects and text on the computer.
a) Keyboard
b) Mouse
c) Scanner
6) The ____ unit is used to temporarily store data and information which is most
frequently used by the ALU.
a) Memory
b) Arithmetic
c) Logic
Q2. Fill in the blanks
1) CU, ALU and MU are the three main parts of computer.
2) All machines generally follows the 3 steps namely input, processing and output.
3)
The IU(input devices) refers to the devices using which you can interact with the
computer.
4) The Memory unit is used to temporarily store data and information.
5) Plotter is used to take large printouts of drawing on paper sheets.
6) In a block diagram, the essential units of the computer system such as input
unit, output unit, processing unit etc. are drawn in the form of rectangles or
blocks.
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Q3. One word answer
1) All the activities of computer is controlled by - CU
2) It does all the mathematical calculations in a computer - ALU
3) Takes the result on paper - Printer
4) Shows work done by the computer - Monitor
5) Record voice, music and sounds on the computer- Microphone
Q4. Write the full forms of the following:
1)
2)
3)
4)
5)
6)
7)
ALU
CU
MU
CPU
OU
IU
PU
: Arithmetic and Logic unit
: Control unit
: Memory unit
: Central processing unit
: Output unit
: Input unit
: Processing unit
Q5. Very Short Answer
1) Write the names of all the units of a computer.
Ans. IU(Input Unit), OU(Output Unit) and PU(Processing Unit).
2) What is the role of input unit?
Ans. Data and instructions are entered into the computer by means of input unit.
3) Write three main parts of CPU.
Ans. CU, ALU and MU are the main parts of CPU.
4) Write the name of any three output device.
Ans. Plotter, Speaker and Printer are three output devices.
Q6. Short Answer
1) What is scanner?
Ans. It is used to feed the images and text into the computer directly from a paper. Its
like a photocopier machine.
2) What are output devices?
Ans. The devices that are used to show results or output after processing are called
output devices.
3) What are processing devices?
Ans. CPU is the processing device of a computer. It controls all functions of the
computer.
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4) What is memory unit?
Ans. It stores information and data temporarily.
5) What is the purpose of control unit?
Ans. Control unit controls all the activities of the computer It tells all the parts of the
computer what they should do.
Q7. Long Answer
1) Write the functions of the Input, Output and Processing unit.
Ans.
Input unit : The input unit refers to the devices, using which we can interact
with the computer , the data in the form of signals. Example mouse, keyboard,
microphone etc.
Output unit : It consists of devices that can show the result of the work done by
computer. Example speaker, printer, plotter etc.
Processing unit : CPU is the processing unit of computer. It is the brain of
computer system and does all its calculations. It has 3 main parts : CU(Control
Unit), ALU(Arithmetic & Logic Unit) and MU(Memory Unit)
2) Write the use of following input devices:
Ans.
Joystick : Used to play games on the computer.
Scanner : Used to scan pictures into the computer.
Microphone : Can record voice, music and sounds on the computer.
Lightpen : Used to select objects and text on screen. We can draw figures on the
screen.
Q8.
Draw the following :
1) Block diagram of computer (Pg. no.12)
2) Mouse, Microphone, Monitor and Speaker (Pg.no.12 & 13)
Q9.
Application Based Questions
1) Are we able to work on computer without the CPU? If not then why?
Ans. No, we are not able to work on computer without the CPU as without brain
our body can not work similarly without the brain of computer it also can not
work and CPU is the brain of computer i.e. its processing unit where it does
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all its calculations.
2) You are doing some mathematical calculation in computer for your project.
Which unit of computer will help the computer for its processing?
Ans. Arithmetic and Logic Unit (ALU)
3) You are representing the units of computer with their relationships, using
boxes and arrow. What it is called?
Ans. Block diagram of computer
4) You are the participant in one competitive exam. There you are selecting the
objects and text on screen directly drawing figures on the screen. Tell the
name of that input device.
Ans. Light Pen
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