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Digital Computer Electronics

Digital Computer Electronics
For an input pulse train of clock period T, the delay produced by an n stage shift register is

(n-l)T
nT
(n+l)T
2nT
None of these

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Digital Computer Electronics
The term sum-of-products in boolean algebra means

None of these
The AND function of several AND functions
The OR function of several OR functions
The AND function of several OR functions
The OR function of several AND functions

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

gray code
None of these
8421 code
excess 3 code
algebraic code

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Digital Computer Electronics
An OR gate has 6 inputs. How many input words are in its truth table?

32
64
128
None of these
16

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Digital Computer Electronics
What table shows the electrical state of a digital circuit's output for every possible combination of electrical states in the inputs?

Function table
Routing table
ASCII table
Truth table
None of these

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Digital Computer Electronics
The output 0 and 1 levels for TTL logic family is approximately

None of these
0.1 and 5 V
-1.75 and -0.9 V
0.9 and 1.75V
0.6 and 3.5 V

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