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Digital Electronics

Digital Electronics
(44)8 in BCD 8421 code is

 01100011
 01000100
 00110110
 00100100

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Digital Electronics
The voltage levels for positive logic system

 must necessarily be 0 V and 5 V
 must necessarily be negative
 must necessarily be positive
 may be positive or negative

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Digital Electronics
In which code do the successive code characters differ in only one position?

 8421 code
 Gray code
 Hamming code
 XS-3 code

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Digital Electronics
The code used in digital systems to represent decimal digits, letters, and other special characters such as + , – , . , * , etc. is

 hexadecimal
 octal
 ASCII
 natural BCD

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Digital Electronics
ASCII code is a

 10-bit code
 8-bit code
 7-bit code
 5-bit code

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

 < 20
 < 6
 < 25
 < 12

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