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Digital Electronics

Digital Electronics
Which one of the following is an invalid state in 8-4-2-1 binary coded decimal counter

 0011
 1001
 1000
 1100

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Digital Electronics
Consider the following multiplication: (10w1z) × (15)10 = (y01011001)2 Which one of the following gives appropriate values of w,y and z?

 w = 1,y = 1,z = 1
 w = 0,y = 1,z = 1
 w = 1,y = 1,z = 0
 w = 0,y = 0,z = 1

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Digital Electronics
What logic function is produced by adding inverters to the inputs of an OR gate?

 AND
 X-NOR
 NAND
 NOR

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

 AND-AND
 AND-OR
 NOR-OR
 XOR-NAND

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Digital Electronics
(FE35)16 XOR (CB15)16 is equal to

 (3320)16
 (FF35)16
 (3520)16
 (FF50)16

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Digital Electronics
A group of four bits is known as

 Byte
 Word
 Bit
 Nibble

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