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Digital Electronics

Digital Electronics
In which of the following base systems is 123 not a valid number?

Base 10
Base 16
Base 3
Base 8

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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

 cyclic codes
 self-complementing codes
 BCD codes
 sequential codes

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Digital Electronics
Boolean algebra is also known as

 Counting algebra
 Gate algebra
 Transistor algebra
 Switching algebra

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Digital Electronics
What are the values of R1 and R2 respectively in the expression (235)R1 = (565)10 = (1065)R2

 8, 16
 6, 16
 16, 8
 12, 8

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Digital Electronics
What is the gray code for the binary 101011?

 011111
 111110
 101011
 110101

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Digital Electronics
EBCDIC code is a

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

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