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Digital Electronics

Digital Electronics
The output of a gate is HIGH if and only if all its inputs are LOW. It is true for

 NOR
 NAND
 X-NOR
 X-OR

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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

 2
 1
 4
 0

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Digital Electronics
The code used for labeling the cells of a K-map is

 hexadecimal
 gray
 octal
 8-4-2-1 binary

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Digital Electronics
Four ROM chips of 16 × 4 size have their address buses connected together. This system will be of size

 32 × 8
 256 × 1
 16 × 16
 64 × 4

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Digital Electronics
A combinational circuit can be designed using only

 OR and X-NOR gates
 NOR gates
 AND gates
 OR gates

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Digital Electronics
A multiplexer is a

 N-to-1 device
 1-to-N device
 N-to-N device
 1-to-1 device

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