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Digital Electronics

Digital Electronics
A bubbled AND gate is equivalent to a

 OR gate
 NAND gate
 NOR gate
 X-OR gate

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Digital Electronics
Which one of the following is 2’s complement of -68?

 10111100
 01111100
 11000100
 00111100

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Digital Electronics
A Nibble is equal to ________ bit(s)

 4
 8
 1
 2

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Digital Electronics
For checking the parity of a digital word, it is preferable to use

 NOR gates
 NAND gates
 AND gates
 X-OR gates

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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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Digital Electronics
The decimal number 0.246 in binary is

 0.011011
 0.001101
 0.010111
 0.001111

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