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Digital Electronics

Digital Electronics
Which one of the following is 2’s complement of -68?

 00111100
 01111100
 10111100
 11000100

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Digital Electronics
Digital computers are more widely used as compared to analog computers, because they are

Easier to maintain
Less expensive
Always more accurate and faster
Useful over wider ranges of problem types

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Digital Electronics
Positive integers must be represented by

 Both A and B
 signed numbers
 None of these
 unsigned number

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Digital Electronics
A multiplexer is a combinational logic circuit used to perform the operation

 AND-OR
 AND-AND
 XOR-NAND
 NOR-OR

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Digital Electronics
NOT gates are to be added to the inputs of which gate to convert it to a NAND gate?

 OR
 X-OR
 AND
 NOT

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Digital Electronics
An AND gate can be imagined as

 switches connected in series
 transistors connected in series
 switches connected in parallel
 transistors connected in paralle

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