21. Which of the following machines are characterised by electronic tube circuitry, delay line, rotating or electrostatic memory.

A. First generation
B. Fifth generation
C. Third generation
D. Second generation
E. Fourth generation

22. A memory that is capable of determining whether a given datum is contained in one of its addresses is

A. ROM
B. PROM
C. CAM
D. RAM
E. None of the above

23. The smallest logical data entity is called a data item or data

A. Base
B. Field
C. Bank
D. Collection
E. None of the above

24. Conversion of a hexadecimal number 3D₁₆ to binary number is

A. 111101₂
B. 110011₂
C. 11000110₂
D. 110001₂
E. None of the above

25. Programs prepared by an outside supplier & privided to a user in a machine readable form is known as

A. Utility program
B. Canned program
C. Application program
D. Application software
E. None of the above