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VIVA VOCE

1. What is an I-P-O cycle?
Ans. A computer takes input in the form of data, processes it and produces the desired output. Every task given
to a computer follows an Input→Process→Output Cycle (IPO Cycle).

2. Which device is used to uniquely identify a person on the basis of their physical or behavioural traits?
Ans. Biometric Sensor.
3. Which device is used to detect the numbers printed with magnetically charged ink at the bottom of bank
cheques and to convert them into digital data?
Ans. Magnetic Ink Character Reader (MICR).
4. What are high-speed temporary storage areas found in the CPU?
Ans. Registers.
5. What are the two parts of the main memory?
Ans. Two parts of the main memory are:
(a) Random Access Memory (RAM)
(b) Read-Only Memory (ROM)
6. Why are secondary storage devices required?
Ans. Secondary storage devices are required because of the following two reasons:
(a) The primary memory is finite and limited in size.
(b) In secondary storage, data and programs do not disappear when power is turned off.
7. Why are language processors used? List their types.
Ans. Programs written in a high-level language are required to be converted into a machine language. This task
is accomplished by the language processor.
The types of language processors are as follows:
(a) Assembler
(b) Interpreter
(c) Compiler
8. What is the difference between RAM and ROM?
Ans. RAM refers to random access memory where both read and write operations can take place. But RAM is a
volatile memory; its contents are lost when power is turned off. ROM refers to read-only memory where
only read operation can take place. ROM is a non-volatile memory.
Both RAM and ROM are parts of the primary memory.

9. Define the following terms:
(a) Application Software
(b) Cache Memory
Ans. (a) Application Software: This software is needed to cater to different requirements of the end-users.
This specific software that works on top of the system software is termed as application software,
for example, MS Word.
(b) Cache Memory: To speed up the operations of the CPU, a very high-speed memory is placed between
the CPU and the primary memory, known as cache. It stores copies of the data from frequently
accessed primary memory locations, thus reducing the average time required to access data from
primary memory.
10. What is the radix of decimal and binary number systems?
Ans. The radix of decimal number system is 10 and that of binary number system is 2.
11. What is tautology?
Ans. If the result of a logical expression or logical statement is always True or 1, it is known as tautology.

12. What is fallacy?
Ans. If the result of a logical expression or logical statement is always False or 0, it is known as fallacy.

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