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Digital Computer Electronics

Digital Computer Electronics
How many outputs signals can a gate have?

both (a) and (b)
one
two only
None of these
more than one

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Digital Computer Electronics
Convert the 1000 0000 0000 1111 signed binary number to decimal number.

-30
15
-15
30
None of these

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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.

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

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Digital Computer Electronics
Which of the following boolean algebra statements represent commutative law

A+BB+A
A+AA
(A+B)+CA+(B+C)
None of these
(B+C)(A.B)+(A.C)

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Digital Computer Electronics
Conversion of an octal number 1348 to a binary number is

10111002
11011002
1100112
10110112
None of these

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Digital Computer Electronics
Conversion of binary number 11000112 to its decimal number is

2910
9910
9310
None of these
9710

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