4. Write full forms of the following.
a) PU = Processing Unit
b) GIGO = Garbage in garbage out
c) E-mail = Electronic mail
d) ALU = Arithmetic Logic Unit
b) GIGO = Garbage in garbage out
c) E-mail = Electronic mail
d) ALU = Arithmetic Logic Unit
5. Write very short answer of the following questions.
a) What are raw facts or symbols known as?
Ans: Data
b) What are set of instructions called?
Ans: Program
c) Which functional unit of computer controls operation of all parts?
Ans: Control Unit
d) Computer is an electrical or electronic machine. Justify.
Ans: Computer is an electrical or electronic machine because it uses electricity.
Ans: Data
b) What are set of instructions called?
Ans: Program
c) Which functional unit of computer controls operation of all parts?
Ans: Control Unit
d) Computer is an electrical or electronic machine. Justify.
Ans: Computer is an electrical or electronic machine because it uses electricity.
6. Write suitable technical term (single word) for the following.
a. The basic unit of computer.
Ans: Input device
b. The mean of computer technology to send messages.
Ans: E-mail
c. The mistakes committed by people not by the computer.
Ans: Garbage in garbage out (GIGO)
d. The computer components which produces result.
Ans: Output device
Ans: Input device
b. The mean of computer technology to send messages.
Ans: E-mail
c. The mistakes committed by people not by the computer.
Ans: Garbage in garbage out (GIGO)
d. The computer components which produces result.
Ans: Output device
7. Write short answer of the following questions.
a. What do you mean by computer?
a. What do you mean by computer?
b. Write any four purposes of using the computer.
c. What is the function of Central Processing unit while processing data?
Ans: It performs all types of data processing operations like basic arithmetic, logic, controlling and storing.
d. List any four advantages of computer.
e. What is the difference between input unit and output unit of computer?
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