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Digital Electronics

Digital Electronics
The main criterion in the design of a digital circuit is reduction of

 weight
 cost
 size
 volume

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Digital Electronics
The binary code of (21.125)10 is

10101.01
10100.111
10101.001
10100.001

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

 50 to 100
 < 50
 < 500
 12 to 99

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

 47,877
 48,877
 48,777
 none

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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 .

 2 KHz.
 500 Hz.
 250 Hz.
  1 KHz.

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

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

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