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Digital Electronics

Digital Electronics
Maximum number in decimal that can be represented by 4 bits (binary) is

 15
 4
 7
 16

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Digital Electronics
What logic function is produced by adding inverters to the inputs of an AND gate?

 OR
 NOR
 X-OR
 NAND

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Digital Electronics
It is desired to have a 64 × 8 ROM. The ROMs available are of 16 × 4 size. The number of ROMs required will be

 8
 6
 4
 2

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Digital Electronics
When will be the output of an exclusive-OR gate is HIGH ?

 All inputs are LOW
 The inputs are different
 All inputs are HIGH
 The inputs are equal

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Digital Electronics
X OR X' will result

 1
 X
 0
 X'

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Digital Electronics
The binary code of (21.125)10 is

10101.001
10101.01
10100.001
10100.111

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