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Digital Computer Electronics

Digital Computer Electronics
What is the decimal equivalent of 210?

16
4096
None of these
1000
1024

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Digital Computer Electronics
What logic function is produced by adding an inverter to each input and the output of an AND gate?

XOR
OR
None of these
NOR
NAND

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Digital Computer Electronics
A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2's complements stand for _____ decimal numbers.

sign, hexa
positive, negative
hexa, sign
negative, positive
None of these

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Digital Computer Electronics
Consider as RS flip-flops with both inputs set to 0. If a momentary '1' is applied at the input S, then the output

Q will flip from 0 to 1
None of these
Q will flip from 0 to 1 and then back to 0
Q will flip from 0 to 1 and then back to 0
Q will flip from 0 to 1

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Digital Computer Electronics
With an RS latch a high S and low R sets the output to _____ ; a low S and a high R _____ the output to low.

No change, set
None of these
set, reset
Race, high
high, reset

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

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

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