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Digital Electronics

Digital Electronics
Digital circuit can be made by the repeated use of ___________

None of these
NAND gates
NOT gates
OR gates

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Digital Electronics
If two numbers in excess-3 code are added and the result is less than 9, then to get equivalent binary

 0110 is added
 0011 is subtracted
 0011 is added
 0110 is subtracted

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Digital Electronics
A multiplexer is a combinational logic circuit used to perform the operation

 AND-OR
 AND-AND
 NOR-OR
 XOR-NAND

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Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

27
12
21
19

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Digital Electronics
When will be the output of an AND gate is HIGH if there are three inputs, A, B, and C ?

 A = 1, B = 0, C = 1
 A = 1, B = 1, C = 1
 A = 1, B = 1, C = 0
 A = 0, B = 0, C = 0

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Digital Electronics
Why encoder is used in the digital electronics ?

 It is used to separate address bus and data bus
 To convert coded information into non coded form
None of these
 To convert non coded information into coded form

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