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Digital Computer Electronics

Digital Computer Electronics
The Gray code for decimal 7 is

101
None of these
111
1011
100

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Digital Computer Electronics
An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ parity.

odd, even
high, low
None of these
low, high
even, odd

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Digital Computer Electronics
What logic function is produced by adding an inverter to each input and the output of an AND gate?

XOR
None of these
NOR
OR
NAND

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Digital Computer Electronics
The hexadecimal number system is widely used in analyzing and programming ______

None of these
registers
microprocessors
vacuum tube
chips

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Digital Computer Electronics
Which of the following electronic component is not found in ordinary ICs?

transistors
diodes
None of these
resistors
inductors

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Digital Computer Electronics
A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2's complements stand for _____ decimal numbers.

positive, negative
negative, positive
None of these
sign, hexa
hexa, sign

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