1. When an input electrical signal A=10100 is applied to a NOT gate, its output signal is
A. 01011
B. 10001
C. 10101
D. 00101
E. None of the above
2. The first practical commercial typewriter was invented in 1867 in the United States by
A. Christopher Latham Sholes
B. Carlos Glidden
C. Samuel Soule
D. All of the above
E. None of the above
3. What is meant by quad-density (QD) diskette?
A. It is double-sided disk
B. It is double density disk
C. It has double the number of tracks per inch
D. All of the above
E. None of the above
4. Large computer system typically uses:
A. Line printers
B. Ink-jet printers
C. Dot-matrix printers
D. Daisy wheel printers
E. None of the above
5. First generation computers are characterized by
A. Vacuum tubes and magnetic drum
B. Minicomputers
C. Magnetic tape and transistors
D. All of the above
E. None of the above
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