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Digital Computer Electronics

Digital Computer Electronics
What logic function is obtained by adding an inverter to the output of an AND gate?

NAND
NOR
None of these
XOR
OR

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Digital Computer Electronics
If a microcomputer has a 64K memory, what are the hexadecimal notations for the first and last memory location?

0000, EEEE
0000, 9999
None of these
0000, FFFF
0, 64

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Digital Computer Electronics
The output of the following gate is 0 only if at least one of the inputs is 1:

EX-OR gate
AND gate
None of these
NOR gate
OR gate

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Digital Computer Electronics
De Morgan's first theorem says that a NOR gate is equivalent to a bubbled _____ gate.

XOR
AND
None of these
XAND
NOR

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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
sign, hexa
None of these
hexa, sign

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Digital Computer Electronics
Conversion of binary number 10010012 to hexadecimal is

None of these
4916
3916
4016
4216

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