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Digital Electronics

Digital Electronics
2-out-of-5 code is

 self-complementing code
 weighted code
 non-weighted code
 alphanumeric code

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Digital Electronics
Counter is a

  sequential circuit.
  both.
  none.
  combinational circuit.

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Digital Electronics
Dual slope ADC has R = 1 KΩ and C = 0.22 nanofarad has charging and discharge times for some voltage is 9 ns and 3 ns respectively. The reference Voltage is 2.2 V. What is the peak voltage reached by triangular wave during charging?

 90 mV.
 300 mV.
 900 mV.
 30 mV.

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Digital Electronics
The output of a logic gate is 1 when all its inputs are at logic 0. The gate is either

 a NAND or a NOR
 an AND or an X-NOR
 an X-OR or an X-NOR
 an OR or a NAND

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Digital Electronics
An n variable K-map can have

 2n cells
  nn cells
 n2 cells
 n2n cells

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

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

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