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Digital Electronics

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

 < 20
 < 6
 < 25
 < 12

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Digital Electronics
For the design of a combinational circuit with four inputs using only NAND gates, the number of K-maps required for the simplification process is

 1
 0
 2
 4

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Both (I)&(III)
 Only (III)
 Only (II)
 Both (II)&(III)

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

 XS-3 code
 Gray code
 BCD code
 ASCII code

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Digital Electronics
11001, 1001 and 111001 correspond to the 2’scomplement representation of the following set of numbers

 -25, -9 and -57 respectively
 -6, -6 and -6 respectively
 25, 9 and 57 respectively
 -7, -7 and -7 respectively

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Digital Electronics
The codes in which each successive code word differs from the preceding one in only one bit position are called

 sequential codes
 self-complementing codes
 BCD codes
 cyclic codes

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