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Digital Electronics

Digital Electronics
1 kb represents

 1000 bytes
 100 bytes
 10,000 bytes
 1024 bytes

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Digital Electronics
The maximum positive and negative numbers which can be represented in two’s complement form using n bits are respectively,

 +(2n-1-1),-2n-1
 +2n-1,-(2n-1+1)
 +2n-1,-2n-1
 +(2n-1-1),-(2n-1-1)

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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.

12 CPS
10 CPS
120 CPS
None of these

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Digital Electronics
The NAND gate can function as a NOT gate if

 inputs are left open
 one input is set to 1
 all inputs are connected together
 one input is set to 0

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Digital Electronics
The resolution of a 12 bit analog to digital converter in percent in

 0.09760.
  0.01220.
 0.04882.
  0.02441.

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Digital Electronics
In the toggle mode a JK flip-flop has

 J = 1, K = 1.
 J = 0, K = 1.
 J = 0, K = 0.
 J = 1, K = 0.

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