21. The range of frequencies available for data transmission is known as

A. Baud
B. Bandwidth
C. Byte
D. Bits
E. None of the above

22. Full adder has

A. 4 inputs
B. 8 inputs
C. 10 inputs
D. 3 inputs
E. None of the above

23. Which major development led to the production of microcomputers?

A. Magnetic disks
B. Floppy disks
C. Logic gates
D. Integrated circuits
E. None of the above

24. The first computer made available for commercial use was

A. Mark-I
B. ENIAC
C. EDSAC
D. UNIVAC
E. None of the above

25. In which mode, each user has a local input/output device.

A. Interactive
B. Time sharing mode
C. Batch processing mode
D. All of the above
E. None of the above