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Digital Computer Electronics

Digital Computer Electronics
Which of the following is not functionally a complete set?

NOR
NAND
None of these
AND, OR
AND, OR, NOT

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Digital Computer Electronics
What is the 2's-complement representation of -24 in a 16-bit microcomputer?

0000 0000 0001 1000
None of these
0001 0001 1111 0011
1111 1111 1110 1000
1111 1111 1110 0111

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Digital Computer Electronics
The time required for a pulse to decrease from 90 to 10 percent of its maximum value is known as

rise time
None of these
decay time
propagation delay
binary level transition period

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Digital Computer Electronics
What advantages do ICs have over discrete-device circuits due to their greater complexity (i.e. more circuitary in less area)

Higher reliability
Lower cost
All of these
None of these
Smaller size

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Digital Computer Electronics
The control and arithmetic-logic sections are called the _____

Central Processing Unit
None of these
Block diagram
Input / Output Unit
Control Unit

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Digital Computer Electronics
The NOR gate is logically equivalent to an OR gate followed by an _____

inverter
XAND
None of these
AND
XOR

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