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Digital Electronics

Digital Electronics
Storage of 1 KB means the following number of bytes

1000
964
1024
1064

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Digital Electronics
The field, which is never present in an assembly language statement, is

 Comment
 Opcode
 Continue
 Operand

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Digital Electronics
NOT gates are to be added to the inputs of which gate to convert it to a NOR gate?

 X-NOR
 OR
 NAND
 AND

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Digital Electronics
Which of the following is 1’s complement representation of +57

 01000110
 00111001
 00000001
 11000110

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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 .

 250 Hz.
  1 KHz.
 2 KHz.
 500 Hz.

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Digital Electronics
Consider the following multiplication: (10w1z) × (15)10 = (y01011001)2 Which one of the following gives appropriate values of w,y and z?

 w = 1,y = 1,z = 1
 w = 1,y = 1,z = 0
 w = 0,y = 1,z = 1
 w = 0,y = 0,z = 1

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