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Digital Electronics

Digital Electronics
To get an excess-3 code from BCD code

 0110 is subtracted
 0011 is subtracted
 0011 is added
 0110 is added

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Digital Electronics
In LSI, the number of gate circuits per chip is

 1000 to 10,000
 100 to 999
 100 to 9,999
 < 10,000

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Digital Electronics
F’s complement of (2BFD)Hex is

 D403
 E304
 D402
 C403

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Digital Electronics
Four ROM chips of 16 × 4 size have their address buses connected together. This system will be of size

 256 × 1
 32 × 8
 16 × 16
 64 × 4

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Digital Electronics
Which of these circuits have higher gate complexity 1. Carry look ahead adder 2. Ripple carry adder

 none
 both have same
 2
 1

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Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

19
12
27
21

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