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Digital Electronics

Digital Electronics
The 2s complement of 17 is

 110001.
 111110.
 101110.
  101111.

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Digital Electronics
The only function of NOT gate is to ___________.

Invert input signal
Act as a universal gate
None of these
Stop signal

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Digital Electronics
A system has following negative numbers stored in binary form as shown. The wrongly stored number is

 -48 as 11101000
 -37 as 11011011
 -89 as 10100111
 -32 as 11100000

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Digital Electronics
Which of the following is not a transmission medium?

 Microwave systems.
  Modem.
 Coaxial cables.
 Telephone lines.

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Digital Electronics
A self-complementing code for the decimal digits is created using the weight 4 4 3 -2. The value of 8592 in the code is

 1000 0101 1001 0010
 1100 1011 1111 1001
 1100 1001 1111 1000
 1100 0111 1111 0011

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Both (I)&(III)
 Both (II)&(III)
 Only (II)
 Only (III)

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