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Digital Electronics

Digital Electronics
A multiplexer is a

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

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Digital Electronics
Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is

TTLLS
CMOS
ECL
TTLAS

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Digital Electronics
Logic circuits are

 analog circuits
 none of these
 digital circuits
 hybrid circuits

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Digital Electronics
The decimal equivalent of hexadecimal number “BEED” is

 48,877
 none
 47,877
 48,777

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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.
 500 Hz.
 250 Hz.
 2 KHz.

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Digital Electronics
The set of which logic gates is designated as universal gate?

 XNOR, NOR, NAND.
  NOR , NAND.
 NOT, OR , AND.
 XNOR, NOR, NAND.

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