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Digital Electronics

Digital Electronics
ASCII and EBCDIC codes are

 alphanumeric codes
 BCD codes
 error correcting codes
 numeric codes

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Digital Electronics
In simplification of a Boolean function of n variables, a group of 2m adjacent 1s leads to a term with

 m – 1 literals less than the total number of variables
 n – m literals
 m + 1 literals less than the total number of variables
 n + m literals

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Digital Electronics
Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is

ECL
CMOS
TTLLS
TTLAS

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Digital Electronics
An 8-square is called

 a quad
 a cube
 a pair
 an octet

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

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

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

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