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Digital Electronics

Digital Electronics
What is the Boolean expression for a two-input AND gate ?

 A.B
 A + B
 A - B
 A & B

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Digital Electronics
The number of comparators in a parallel conversion type 8-bit analog to digital converter is

  255.
 256.
  8.
 16.

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Digital Electronics
An 8-square is called

 a cube
 an octet
 a pair
 a quad

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Digital Electronics
The binary code of (21.125)10 is

10101.001
10101.01
10100.001
10100.111

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Digital Electronics
Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit is.

120 CPS
12 CPS
10 CPS
None of these

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Digital Electronics
An AND gate will function as OR if

All the inputs are ‘0’
All the inputs and outputs are complemente'
All the inputs to the gates are “1”
Either of the inputs is “1”

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