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Digital Computer Electronics

Digital Computer Electronics
The simplified form of the Boolean expression (X + Y + XY)(X + Z) is

X + YZ
X + Y + Z
XY + YZ
None of these
XZ + Y

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

NOR
OR
XOR
None of these
NAND

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Digital Computer Electronics
Subtraction of 1001011002 from 11101010102 is

11110000012
1101000012
10010111102
None of these
11110111112

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Digital Computer Electronics
An AND gate has 7 inputs, what is the only input word that produces a 1 output?

1111111
1110000
None of these
1111

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Digital Computer Electronics
A combinational logic circuit which is used to send data coming from a single source to two or more separate destinations is called as

demultiplexer
decoder
None of these
multiplexer
encoder

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Digital Computer Electronics
Address 200H contains the byte 3FH. What is the decimal equivalent of 3FH

None of these
63
38
32
16

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