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Digital Computer Electronics

Digital Computer Electronics
The 2's compliment of binary number 010111.1100 is

None of these
101000.01
101000.0011
101001.11
10111.0011

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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?

OR
None of these
NOR
XOR
NAND

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Digital Computer Electronics
What is the 1's complement of 0000 1111 0010 1101 number?

1111 1100 1010 1100
1111 0000 1101 0010
None of these
1111 0000 0010 1101
1001 0010 1010 1100

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Digital Computer Electronics
An AND gate has 7 inputs. How many input word are in its truth table?

16
None of these
32
128
64

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Digital Computer Electronics
How many full adders are required to construct an m- bit parallel adder?

m+1
m
None of these
m/2
m-1

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Digital Computer Electronics
The number of two-input NAND gates required to produce the two-input OR function is

2
1
None of these
4
3

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