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Digital Electronics

Digital Electronics
NOT gates are to be added to the inputs of which gate to convert it to a NOR gate?

 OR
 X-NOR
 NAND
 AND

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Digital Electronics
In Boolean algebra, the bar sign (-) indicates ___________.

AND operation
None of these
OR operation
NOT operation

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Digital Electronics
X OR X' will result

 1
 0
 X'
 X

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Digital Electronics
Why small bubble is given on the output of the NAND gate symbol ?

 Tristate
None of these
 Output is inverted
 Open collector output

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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?

 30 mV.
 900 mV.
 300 mV.
 90 mV.

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

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

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