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Digital Electronics

Digital Electronics
Maximum number in decimal that can be represented by 4 bits (binary) is

 16
 15
 4
 7

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Digital Electronics
9’s complement of 52784630 is

 47215369
 48225469
 57316379
 58326479

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Digital Electronics
2's Complement of 10101011 is

 00111100
 10101011
 10101100
 01010101

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Digital Electronics
When will be the output of an exclusive-OR gate is HIGH ?

 All inputs are HIGH
 The inputs are equal
 The inputs are different
 All inputs are LOW

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Digital Electronics
A self-complementing code for the decimal digits is created using the weight 4 4 3 -2. The value of 8592 in the code is

 1100 1011 1111 1001
 1100 1001 1111 1000
 1100 0111 1111 0011
 1000 0101 1001 0010

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Digital Electronics
Which of the following BCD codes with an odd parity bit included in the end of code group, have error in the code? (I)1001010110000 (II)0100011101100 (III)0111110000011 (IV)1000011000101

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

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