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Digital Electronics

Digital Electronics
The number of Boolean functions that can be generated by n variables is equal to

2n-1
22n
2n
2n

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

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Digital Electronics
A combinational circuit can be designed using only

 AND gates
 OR gates
 OR and X-NOR gates
 NOR gates

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Digital Electronics
Which of the following memories uses one transistor and one capacitor as basic memory unit

 SRAM
 None
 Both SRAM and DRAM
 DRAM

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Digital Electronics
Complement of XNOR and NOR is ________ and ________ respectively.

 XOR, NOR
 NOR, XNOR
 XOR, OR
 OR, NOR

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Digital Electronics
The XS-3 code is a

 cyclic code
 self-complementing code
 weighted code
 error-correcting code

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