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Digital Electronics

Digital Electronics
The logic expression AB can be implemented by giving the inputs A and B to a two-input

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

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 1. The gate is either

 a NAND or an X-OR
 a NAND or an AND
 a NOR or an X-NOR
 a NAND or an X-NOR

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Digital Electronics
OR-AND realization of a combinational circuit is equivalent to

 NAND-NOR realization
 NOR-NAND realization
 NOR-NOR realization
 NAND-NAND realization

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Digital Electronics
The simplified block diagram of a 10-bit A/D converter of dual slope integrator type is shown in figure. The 10-bit counter at the output is clocked by a 1 Mhz clock. Assuming negligible timing overhead for the control logic, the maximum frequency of the analog signal that can be converted using this A/D converted is approximately .

  1 KHz.
 2 KHz.
 250 Hz.
 500 Hz.

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Digital Electronics
To get an excess-3 code from BCD code

 0110 is subtracted
 0011 is added
 0011 is subtracted
 0110 is added

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Digital Electronics
In MSI, the number of gate circuits per chip is

 < 500
 < 50
 12 to 99
 50 to 100

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