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Digital Computer Electronics

Digital Computer Electronics
In which code the successive code characters differ in only one bit position?

excess 3 code
gray code
None of these
8421 code
algebraic code

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Digital Computer Electronics
The output 0 and 1 levels for TTL logic family is approximately

None of these
0.1 and 5 V
0.9 and 1.75V
0.6 and 3.5 V
-1.75 and -0.9 V

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Digital Computer Electronics
Conversion of binary number 11000112 to hexadecimal is

None of these
4616
5716
4016
6316

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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.

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

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Digital Computer Electronics
Which TTL sub-family has maximum speed?

high speed TTL
None of these
schottky-clamped TTL
standard TTL
low power TTL

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Digital Computer Electronics
Subtraction of 1001011002 from 11101010102 is

1101000012
None of these
10010111102
11110000012
11110111112

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