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Digital Electronics

Digital Electronics
Which of the logical operations is represented by the + sign in Boolean algebra ?

 OR
 NOT
 NAND
 AND

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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 minimum decimal equivalent of the number 11C is

 183
 269
 194
 268

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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.
 90 mV.
 300 mV.
 900 mV.

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Digital Electronics
What is the requirement of fullsubstractor circuit ?

 Three inputs and one output
 Two inputs and two outputs
 Three inputs and two outputs
 Two inputs and three outputs

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

NOT operation
None of these
OR operation
AND operation

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