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Digital Electronics

Digital Electronics
In which of the following codes do the successive characters differ in only 1-bit position?

 8421 code
 cyclic code
 binary code
 2421 code

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Digital Electronics
The maximum positive and negative numbers that can be represented in one’s complement using n-bits are respectively

 +(2n-1-1),-(2n-1-1)
 +(2n-1-1),-2n-1
 None of these
 +2n-1,-(2n-1-1)

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Digital Electronics
The NAND-NAND realization is equivalent to

 NOT-OR realization
 OR-AND realization
 AND-OR realization
 AND-NOT realization

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Digital Electronics
A ROM has a 16-bit address bus. The number of locations in this memory is

 1024
 16
 32
 65536

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Digital Electronics
The hex address of the 256th memory location is

 000FF
 00FFF
 001FF
 00100

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Digital Electronics
(11011) 2 in BCD 8421 code is

 01101100
 00011011
 00100111
 11011001

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