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Digital Electronics

Digital Electronics
The 2s complement of 17 is

 101110.
  101111.
 110001.
 111110.

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Digital Electronics
Which of these circuits will give yield carry with more delay 1. Carry look ahead adder 2. Ripple carry adder

 2.
 1.
 both are same
 none

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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?

 300 mV.
 30 mV.
 90 mV.
 900 mV.

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Digital Electronics
A bubbled OR gate is equivalent to a

 NOR gate
 NAND gate
 X-OR gate
 AND gate

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Digital Electronics
The output of a NAND gate is low

 only when at least one input is low
 only when all the inputs are low
 only when at least one input is high
 only when all the inputs are high

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Digital Electronics
9’s complement of 52784630 is

 47215369
 57316379
 58326479
 48225469

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