HIGHER SECONDARY FIRST YEAR
COMPUTER SCIENCE
Minimum Learning Materials
Prepared By,
J. KAVITHA, B.Sc, B.Ed, M.C.A, M.Phil.,
Computer Instructor Gr - I
GHSS, S.S.KULAM
Coimbatore – 641107.
, CHAPTER 1: Introduction to Computers
Choose the correct answer:
1. First generation computers used
(a) Vacuum tubes (b) Transistors (c) Integrated circuits (d) Microprocessors
2. Name the volatile memory
(a) ROM (b) PROM (c) RAM (d) EPROM
3. Identify the output device
(a) Keyboard (b) Memory (c) Monitor (d) Mouse
4. Identify the input device
(a) Printer (b) Mouse (c) Plotter (d) Projector
5. …....… Output device is used for printing building plan.
(a) Thermal printer (b) Plotter (c) Dot matrix (d) inkjet printer
6. Which one of the following is used to in ATM machines
(a) Touch Screen (b) speaker (c) Monitor (d) Printer
7. When a system restarts which type of booting is used.
(a) Warm booting (b) Cold booting (c) Touch boot (d) Real boot.
8. Expand POST
(a) Post on self Test (b) Power on Software Test
(c) Power on Self Test (d) Power on Self Text
9. Which one of the following is the main memory?
(a) ROM (b) RAM (c) Flash drive (d) Hard disk
10. Which generation of computer used IC‘s?
(a) First (b) Second (c) Third (d) Fourth
Very Short Answers:
1. What is a computer?
A Computer is an electronic device that processes the input according to the set
of instructions provided to it and gives the desired output at a very fast rate.
2. Distinguish between data and information.
Data Information
Data is defined as an un-processed Information is a collection of facts from
collection of raw facts. which conclusions may be drawn.
Example: 134, 16 ‗Kavitha‘, ‗C‘ Example: Kavitha is 16 years old.
3. What are the components of a CPU?
Control unit,
Arithmetic and logic unit (ALU)
Memory unit.
4. What is the function of an ALU?
The ALU performs arithmetic operations such as addition, subtraction,
multiplication, division and logical operations.
J. Kavitha, B.Sc, B.Ed, M.C.A, M.Phil., Computer Instructor Gr-I, GHSS, S.S.KULAM - CBE 2
, 5. Write the functions of control unit.
The control unit controls the flow of data between the CPU, memory and I/O
devices.
6. What is the function of memory?
Memory enables the computer to store the program. The memory unit is of two
types: 1. Primary memory 2. Secondary memory
7. Differentiate Input and output unit.
Input unit Output unit.
Input unit is used to feed any form of data An Output Unit is any hardware
to the computer. component that conveys information to
users in an understandable form.
8. Distinguish Primary and Secondary memory.
Primary Memory Secondary memory
The primary memory is used to store the The secondary memory is used to store
data temporarily. the data permanently.
Example: RAM Example: Hard disk, CD-ROM and DVD
Short Answers:
1. What are the characteristics of a computer?
Speed * Accuracy * Reliability
Diligence * Multi Processing * Memory
2. Write the applications of computer.
Computers are used to storing data, in the field of education, research, travel and
tourism, weather forecasting, social networking, e-commerce, booking airlines,
railway or movie tickets and even playing games.
3. What is an input device? Give two examples.
Input unit is used to feed any form of data to the computer, which can be stored
in the memory unit for further processing. Example: Keyboard, mouse, etc.
4. Name any three output devices.
Monitor: Monitor is used to display the information.
Printers: Printers are used to print the information on papers.
Plotter: Plotter is used to produce graphical output on papers.
5. Write short note on impact printer.
These printers print with striking of hammers or pins on ribbon.
Example: Dot Matrix printers and Line matrix printers.
J. Kavitha, B.Sc, B.Ed, M.C.A, M.Phil., Computer Instructor Gr-I, GHSS, S.S.KULAM - CBE 3
, Explain in detail:
1. Explain the basic components of a computer with a neat diagram.
Input Unit: To feed any form of data to the computer. Example: Keyboard, mouse, etc.
Central Processing Unit: Three components,
The control unit controls the flow of data between the CPU, memory and I/O
devices.
The ALU performs arithmetic operations
Memory enables the computer to store the program.
Output Unit: Convey the information to users in an understandable form. Example:
Monitor, Printer etc.
Memory Unit: Two types:
The primary memory is used to store the data temporarily.
The secondary memory is used to store the data permanently.
2. Discuss the various generations of computers.
First Generation (1940-1956) - Vacuum tubes
Second Generation (1956-1964) - Transistors
Third Generation (1964 -1971) - Integrated Circuits (IC)
Fourth Generation (1971-1980) - Microprocessor
Fifth Generation (1980 - till date) - Ultra Large Scale Integration (ULSI)
Sixth Generation (In future) - Development of robotics
J. Kavitha, B.Sc, B.Ed, M.C.A, M.Phil., Computer Instructor Gr-I, GHSS, S.S.KULAM - CBE 4
COMPUTER SCIENCE
Minimum Learning Materials
Prepared By,
J. KAVITHA, B.Sc, B.Ed, M.C.A, M.Phil.,
Computer Instructor Gr - I
GHSS, S.S.KULAM
Coimbatore – 641107.
, CHAPTER 1: Introduction to Computers
Choose the correct answer:
1. First generation computers used
(a) Vacuum tubes (b) Transistors (c) Integrated circuits (d) Microprocessors
2. Name the volatile memory
(a) ROM (b) PROM (c) RAM (d) EPROM
3. Identify the output device
(a) Keyboard (b) Memory (c) Monitor (d) Mouse
4. Identify the input device
(a) Printer (b) Mouse (c) Plotter (d) Projector
5. …....… Output device is used for printing building plan.
(a) Thermal printer (b) Plotter (c) Dot matrix (d) inkjet printer
6. Which one of the following is used to in ATM machines
(a) Touch Screen (b) speaker (c) Monitor (d) Printer
7. When a system restarts which type of booting is used.
(a) Warm booting (b) Cold booting (c) Touch boot (d) Real boot.
8. Expand POST
(a) Post on self Test (b) Power on Software Test
(c) Power on Self Test (d) Power on Self Text
9. Which one of the following is the main memory?
(a) ROM (b) RAM (c) Flash drive (d) Hard disk
10. Which generation of computer used IC‘s?
(a) First (b) Second (c) Third (d) Fourth
Very Short Answers:
1. What is a computer?
A Computer is an electronic device that processes the input according to the set
of instructions provided to it and gives the desired output at a very fast rate.
2. Distinguish between data and information.
Data Information
Data is defined as an un-processed Information is a collection of facts from
collection of raw facts. which conclusions may be drawn.
Example: 134, 16 ‗Kavitha‘, ‗C‘ Example: Kavitha is 16 years old.
3. What are the components of a CPU?
Control unit,
Arithmetic and logic unit (ALU)
Memory unit.
4. What is the function of an ALU?
The ALU performs arithmetic operations such as addition, subtraction,
multiplication, division and logical operations.
J. Kavitha, B.Sc, B.Ed, M.C.A, M.Phil., Computer Instructor Gr-I, GHSS, S.S.KULAM - CBE 2
, 5. Write the functions of control unit.
The control unit controls the flow of data between the CPU, memory and I/O
devices.
6. What is the function of memory?
Memory enables the computer to store the program. The memory unit is of two
types: 1. Primary memory 2. Secondary memory
7. Differentiate Input and output unit.
Input unit Output unit.
Input unit is used to feed any form of data An Output Unit is any hardware
to the computer. component that conveys information to
users in an understandable form.
8. Distinguish Primary and Secondary memory.
Primary Memory Secondary memory
The primary memory is used to store the The secondary memory is used to store
data temporarily. the data permanently.
Example: RAM Example: Hard disk, CD-ROM and DVD
Short Answers:
1. What are the characteristics of a computer?
Speed * Accuracy * Reliability
Diligence * Multi Processing * Memory
2. Write the applications of computer.
Computers are used to storing data, in the field of education, research, travel and
tourism, weather forecasting, social networking, e-commerce, booking airlines,
railway or movie tickets and even playing games.
3. What is an input device? Give two examples.
Input unit is used to feed any form of data to the computer, which can be stored
in the memory unit for further processing. Example: Keyboard, mouse, etc.
4. Name any three output devices.
Monitor: Monitor is used to display the information.
Printers: Printers are used to print the information on papers.
Plotter: Plotter is used to produce graphical output on papers.
5. Write short note on impact printer.
These printers print with striking of hammers or pins on ribbon.
Example: Dot Matrix printers and Line matrix printers.
J. Kavitha, B.Sc, B.Ed, M.C.A, M.Phil., Computer Instructor Gr-I, GHSS, S.S.KULAM - CBE 3
, Explain in detail:
1. Explain the basic components of a computer with a neat diagram.
Input Unit: To feed any form of data to the computer. Example: Keyboard, mouse, etc.
Central Processing Unit: Three components,
The control unit controls the flow of data between the CPU, memory and I/O
devices.
The ALU performs arithmetic operations
Memory enables the computer to store the program.
Output Unit: Convey the information to users in an understandable form. Example:
Monitor, Printer etc.
Memory Unit: Two types:
The primary memory is used to store the data temporarily.
The secondary memory is used to store the data permanently.
2. Discuss the various generations of computers.
First Generation (1940-1956) - Vacuum tubes
Second Generation (1956-1964) - Transistors
Third Generation (1964 -1971) - Integrated Circuits (IC)
Fourth Generation (1971-1980) - Microprocessor
Fifth Generation (1980 - till date) - Ultra Large Scale Integration (ULSI)
Sixth Generation (In future) - Development of robotics
J. Kavitha, B.Sc, B.Ed, M.C.A, M.Phil., Computer Instructor Gr-I, GHSS, S.S.KULAM - CBE 4
