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Digital Computer Electronics

Digital Computer Electronics
Conversion of an octal number 608 to binary number is

1100002
None of these
11001102
100112
11001112

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Digital Computer Electronics
The logic 1 in positive logic system is represented by:

lower voltage level
higher voltage level
None of these
zero voltage
negative voltage

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Digital Computer Electronics
Which logic family dissipates the minimum power?

DTL
None of these
ECL
TTL
CMOS

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Digital Computer Electronics
An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ parity.

high, low
None of these
low, high
odd, even
even, odd

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Digital Computer Electronics
What is the 2's complement of 0011 0101 1001 1100 number?

1100 1010 1111 1111
1100 1010 1100 1011
None of these
1100 1010 0110 0100
1100 1010 0110 0011

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Digital Computer Electronics
Which of the following logic expression is wrong?

1+0+1 = 1
1 + 0=1
1 + 1=0
None of these
1 + 1 + 1 = 1

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