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Digital Electronics

Digital Electronics
A three-state buffer has the following output states

 1, 0, float
 Set, Reset, Halt
 Both A and B
 High, Low, Float

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Digital Electronics
NAND. gates are preferred over others because these

have lower fabrication area
can be used to make any gate
consume least electronic power
provide maximum density in a chip.

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Digital Electronics
Which of the following is 1’s complement representation of +57

 00111001
 01000110
 11000110
 00000001

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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 2’s complement is used to represent the numbers, then the range will be

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

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Digital Electronics
To get an excess-3 code from BCD code

 0011 is subtracted
 0110 is added
 0011 is added
 0110 is subtracted

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Digital Electronics
Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?

State Evaluation
State Reduction
State Minimization
State Assignment

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