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Digital Electronics

Digital Electronics
Combinations that are not listed for the input variables are

 Carry
 Borrow
 Overflow
 Don't Care

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Digital Electronics
An exclusive NOR gate is logically equivalent to

 X-OR gate followed by an inverter
 NOT gate followed by a NOR gate
 complement of a NOR gate
 inverter followed by an X-OR gate

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Digital Electronics
The difference between the diagram of a NOR and OR gate is

 NOR has got a bubble at its output terminal
 OR has got a bubble at its output terminal
 OR is more oval than NOR
 OR is more squared than NOR

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Digital Electronics
X' AND X' will result

 X
 0
 X power 2
 1

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Digital Electronics
When two n-bit binary numbers are added then the sum will contain at most

 (n + 1)-bit
 (n + 2)-bit
 (n + n)-bit
 n-bit

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 1’s complement is used to represent the numbers, then the range will be

 -256 to 256
 -256 to 255
 -128 to 127
 -127 to 127

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