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Digital Electronics

Digital Electronics
Which one of the following is an invalid state in 8-4-2-1 binary coded decimal counter

 1001
 1100
 1000
 0011

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Digital Electronics
Which of the following gates is known as a coincidence detector?

 X-NOR gate
 NAND gate
 X-OR gate
 AND gate

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Digital Electronics
The data bus width of a ROM of size 2048 × 8 bits is

 8
 12
 10
 16

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Digital Electronics
Odd parity of a bit stream can be tested using ________ gate.

 XOR
 OR
 AND
 NOR

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Digital Electronics
For the design of a combinational circuit with four inputs using only NAND gates, the number of K-maps required for the simplification process is

 1
 4
 2
 0

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Digital Electronics
In binary number system the first digit (bit) from right to left is called as

 First Bit
 MSB, Most Significant Bit
 Last Bit
 LSB, Least Significant Bit

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