11th Class (HSSC-I) Computer Science Notes:- Unit-1 "Introduction to Computers" Short Questions and Answers (Q1 to Q10)

Class 11 Computer Science (SLO Based) Notes 

For the Examination 2024 and onwards under the 

Federal Board of Intermediate and Secondary Education (FBISE), Islamabad, Punjab Boards, Rawalpindi, Lahore, Karachi board, etc., and All other boards in Pakistan and abroad. 

Unit-1 

"Introduction to Computers"

************************************

Class 8 Computer Science MCQs for practice (All Units Exercise) 

************************************

1.  Short Response Questions and Answers:

Q1. What is a Computer? 

OR 

Define a Computer.

Ans: 

An electronic device that accepts data and instructions (input) from the user, performs operations accordingly (processing), and produces results (output).

Q2. What are the main components of a computer?

Ans: 

Main components of a computer:

Input devices, output devices, central processing units, storage devices, main memory, and communication devices.

Q3. What are computing devices? List some of the computing devices that you can see in your daily life? 

Ans: 

Computing devices:

Any device having embedding computer/processing chips.

Examples:

ATM, digital washing machines, Microwave ovens, A.C, etc.

Q4. What are the Basic Operations of a Computer? 

Ans: 

Basic Operations of a Computer:

Input operation: 

It accepts data and instructions from input devices such as a Keyboard, Mouse, barcode reader, etc.

Processing operation: 

It performs operations , Arithmetic (+, -, *,/) and logical (comparison /relational)

Output operation: 

It displays results on output devices such as monitors or printers etc.

Storage operations: 

It writes data to a storage device such as USB, CD, hard disk, etc.

Q5. Classify digital computers on the basis of their shape, size, processing speed, and cost.

Ans: 

Clasification of digital Computor:

Computers can be classified into four categories on the basis of their shape, size, processing speed, and cost.

1. • Supercomputers
2. • Mainframe computer
3. • Mini computers
4. • Microcomputers

Q6. Describe/enlist some features/characteristics and uses of a  Supercomputer. 

Ans: 

Supercomputers:

Features:

• Largest computers.
• Most expensive.
• Most powerful.
• Designed to process complex calculations.
• Thousands of processors.
• Speed is measured in Tera flops(floating point operation per second)

Uses:

• Design and control of rockets and fighter planes.
• Weather forecasting.
• Nuclear research
• In Pakistan, they are used in SPARCO and Atomic Energy Research center.
• Manufactured by CRAY Inc. and IBM

Q7. Describe/enlist some features/characteristics and uses of Mainframe computers. 

Ans: 

Mainframe computers:

Features:

• Less powerful, less expensive, and smaller than supercomputers.
• More powerful, expensive, and larger than any other computers.
• Very large storage capacity.
• Can execute trillions of instructions per second (TIPS).
• Can support up to thousands of users/terminals.

Uses:

• Used in large organizations like banks, universities, and scientific laboratories
• Also used as a web server.
• Example (IBM zEnterprize EC12, HP 16500 series).

Q8. Describe/enlist some features/characteristics and uses of the Minicomputer. 

Ans: 

Minicomputer:

Features:

• Less powerful, less expensive, and smaller than a mainframe.
• More powerful, expensive, and larger than microcomputers.
• Can support hundreds of users/terminals.
• Can process billions of instructions per second (BIPS)
• Used in industrial process control, scientific research, and small business organizations.

Uses:

• Can be used as database servers.
• Example IBM System /36 DEC PDP, HP 3000, etc.

Q9. Describe/enlist some features/characteristics and uses of the Microcomputers. 

Ans: 

Microcomputers:

Features:

• Smallest and least expensive computers.
• It uses microprocessor chips. VLSI(very large-scale integration).
• General purpose computers.
• Can execute Millions of instructions per second (MIPS).
• Support a large variety of input and output devices (keyboard, mouse, monitor, printers, etc)
• Also called personal computers.
• Support A large variety of applications.

Uses:

• Used in almost every field. (banks, stores, schools, homes, etc.)

Q10. What are Computer Hardware and Software? 

Ans: 

Computer Hardware and Software:

Computer Hardware:

Hardware are physical components of the computer that can be seen and touched. (tangible components).

Examples:  Keyboard, mouse, monitor, printer, circuitry, etc.

Computer Software:

Software is a set of instructions given to computers for performing tasks and solving problems. Also called programs. 

Examples: Word processors, spreadsheets, games, database management systems, etc.

************************************

Please Select from below 👇👇

Unit-1 (Important Short Q/A)

Short Q/A (1 to 10)
Short Q/A ( 11 to 20)
Short Q/A ( 21 to 30)
Short Q/A ( 31 to 40)
Short Q/A ( 41 to 50)
Short Q/A ( 51 to 60)

Unit-1 (Important Long Q/A)

Long Q/A No. 1

Long Q/A No. 2

Long Q/A No. 3

************************************

Computer Science 11th Class Notes (Main Page)

************************************

Shortcut Links For:

1.  5th Class All Subjects Notes

2.  8th Class All Subjects Notes

3.  Easy English Grammar Notes

1. Website for School and College Level Physics   

(https://askrarequiz.blogspot.com)

2. Website for School and College Level Mathematics  

(https://askraremaths.blogspot.com)

3. Website for Single National Curriculum Pakistan - All Subjects Notes 

(https://askrareclassnotes.blogspot.com/)

© 2023 & onwards Academic Skills and Knowledge (ASK)   

Note:  Write me in the comments box below for any query and also Share this information with your class-fellows and friends.