21. An input device which can read characters directly from an ordinary piece of paper is
A. OCR
B. OMR
C. MSI
D. POS
E. None of the above
22. Which of the following is not a part of the CPU
A. storage unit
B. arithmetic and logic unit
C. program unit
D. control unit
E. None of the above
23. Which of the following chips can be reprogrammed with special electric pulses?
A. EPROM
B. PROM
C. ROM
D. EEPROM
E. None of the above
24. In this world of fast changing computer technology, one of the most important factor to be considered while purchasing a PC is, it should have a provision for
A. high level integration
B. self upgradability
C. intelligent sensors
D. faster data access
E. None of the above
25. A collection of eight bits is called
A. Byte
B. Word
C. Record
D. File
E. None of the above