Worksheet 1

 Computer Applications
Class IX
Computer System (chap-1)
Assignment:-1 Solution
Q1. Multiple choice questions:-
a. The physical components of the computer system are called ………………
i) Software ii) Hardware iii) Firmware
b. Which one is the device that is the ‘brain’ of a computer system?
i) CPU ii) Motherboard iii) Scanner
c. Out of these which one is a volatile memory?
i) ROM ii) RAM iii) Floppy
d. A byte consists of …………… bits.
i) 2 ii) 4 iii) 8
e. The smallest unit of data in a computer is…………..
i) Bit ii) Byte iii) nibble
f. 1 Gigabyte (GB)=…………….MB
i) 100 ii) 1000 iii) 1024
g. Unprocessed raw facts and figures are known as
i) Information ii) Storage iii) Data
h. Set of instructions given to computers are called a ……..
i) Program ii) Data iii) Icon
Q2. Fill in the blanks:-
a. Computers have …ZERO…..IQ.
b. …Supercomputer..is the most powerful computer.
c. Data are the raw facts from which information are derived.
d. ALU stands for…Arithmetic logic Unit.
e. The processed and meaningful form of data is called Information.
Q3. What are the major strengths and weaknesses of computer?
Ans3- Strengths-
1. Speed 2. Accuracy 3. Reliability 4. Versatility
5. High storage capacity
Q4. What is computer program?
Ans4- A computer program is a set of instructions given to computer to perform some operations.
Q5. Which type of computer provides a user with mobility as well as essentially the same processing capabilities as a desktop personal computer?
Ans5. Laptop computers or notebooks provide user mobility as well as essentially the same processing capabilities as a desktop personal computer.
Q6. Which of the following are parts of computer i.e. hardware and software?
Hardware- CPU, control unit, ALU, Processor, Memory
Software- Operating system, windows XP, Query


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