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Digital Electronics

Digital Electronics
Which of the following codes is known as the 8421 code?

 Gray code
 BCD code
 ASCII code
 XS-3 code

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Digital Electronics
In binary number system the first digit (bit) from right to left is called as

 LSB, Least Significant Bit
 MSB, Most Significant Bit
 Last Bit
 First Bit

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Digital Electronics
"What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA? A. Propagation delay will increase B. FPGA area will increase C. Wastage of logic modules will not be prevented D. Number of interconnected paths in device will decrease"

B & C
A & B
C & D
A & D

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

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Digital Electronics
The output of a logic gate is 1 when all its inputs are at logic 0. The gate is either

 an OR or a NAND
 an X-OR or an X-NOR
 a NAND or a NOR
 an AND or an X-NOR

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Digital Electronics
A system has following negative numbers stored in binary form as shown. The wrongly stored number is

 -48 as 11101000
 -89 as 10100111
 -32 as 11100000
 -37 as 11011011

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