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Digital Computer Electronics

Digital Computer Electronics
In boolean algebra, the times sign stands for the _____ operation

NAND
None of these
NOR
AND
OR

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Digital Computer Electronics
Which function positive logic is equivalent to OR function in negative logic?

NOT
AND
OR
NOR
None of these

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Digital Computer Electronics
A shift register moves the _____ left or right. Serial loading means storing a word in a shift register by entering _____ bit per clock pulse. With parallel or broadside loading, it takes only one _____ pulse to load the input word.

bits, one, clock
bits, one, register
right, eight, clock
None of these
light, eight, clock

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Digital Computer Electronics
Conversion of binary number 1100012 to its decimal number is

2710
5010
3910
None of these
4910

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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.

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

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

OR
NOR
None of these
XOR
NAND

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