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21. 

Which of the following professions has not been affected by personal computers?
A. medical
B. clerical
C. accounting
D. law
E. None of the above
22. 

What is the name given to the 8-bit unit used for coding data?
A. block of characters
B. byte
C. word
D. K
E. None of the above
23. 

What technology is used for flat panel displays?
A. Solid state
B. RBG monitor
C. VLSI
D. Direct view storage tube
E. None of the above
24. 

What is meant by the term RAM?
A. Memory which can only be read
B. Memory which can be both^read and written to
C. Memory which is used for permanent storage
D. Memory which can only be written to
E. None of the above
25. 

Magnetic tape can serve as :
A. secondary-storage media
B. output media
C. input media
D. All of the above
E. None of the above