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Digital Electronics

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

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

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Digital Electronics
The maximum positive and negative numbers which can be represented in two’s complement form using n bits are respectively,

 +2n-1,-(2n-1+1)
 +(2n-1-1),-2n-1
 +(2n-1-1),-(2n-1-1)
 +2n-1,-2n-1

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Digital Electronics
The binary code of (21.125)10 is

10101.01
10100.001
10101.001
10100.111

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Digital Electronics
How many numbers are used in the decimal number system?

 0 to 9
 0 to 10
None of these
 1 to 10

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Digital Electronics
A signed integer has been stored in a byte using 2’scomplement format. We wish to store the same integer in 16-bit word. We should copy the original byte to the less significant byte of the word and fill the more significant byte with

 1
 Equal to the MSB of the original byte
 Complement of the MSB of the original byte
 0

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Digital Electronics
1’s complement of 17 is

 11100.
 10111.
  01110.
 10001.

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