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Digital Electronics

Digital Electronics
2's Complement of 10101011 is

 01010101
 10101100
 00111100
 10101011

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to negative logic system.

 1 V and 5 V
 5 V and 0 V
 –1.5 V and – 0.5 V
 0 V and 5 V

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Digital Electronics
Minimization of logical expressions while designing digital systems helps in reducing

 cost
 power requirements
 space requirements
All of these

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Digital Electronics
The number A = 01110000 and B = 10101111 are in 2’s complement form .Addition of above two number is

 10101111
 11100000
 011100001
 00011111

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to positive logic system.

 –1.5 V and – 5 V
 5 V and 0 V
 0 V and 5 V
 1 V and -5 V

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Digital Electronics
The inputs of a NAND gate are connected together. The resulting circuit is ___________.

None of these
NOT gate
AND gate
OR gate

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