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Digital Electronics

Digital Electronics
The logic expression A + B can be implemented by giving inputs A and B to a two-input

 NAND gate
 NOR gate
 X-NOR gate
 X-OR gate

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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.

10 CPS
120 CPS
None of these
12 CPS

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Digital Electronics
If in a base b number system, 54/4=13, the base of the number is

 8
 7
 6
 9

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Digital Electronics
The implicants which will definitely occur in the final expression are called

 prime implicants
 redundent prime implicants
 essential prime implicants
 selective prime implicants

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Digital Electronics
Which of the following represents (E3)16 ?

 (1CE)16+(A2)16
 (200)16-(11D)16
 (1BC)16-(DE)16
 (2BC)16-(1DE)16

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 1’s complement is used to represent the numbers, then the range will be

 -256 to 256
 -256 to 255
 -128 to 127
 -127 to 127

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