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Digital Electronics

Digital Electronics
Which of the following is known as a mod-2 adder?

 X-OR gate
 NOR gate
 NAND gate
 X-NOR gate

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Digital Electronics
Which of the following gates is known as a coincidence detector?

 X-NOR gate
 NAND gate
 X-OR gate
 AND gate

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

 1001
 1100
 1000
 0011

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Digital Electronics
(44)8 in BCD 8421 code is

 01100011
 01000100
 00100100
 00110110

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Digital Electronics
Which type of CPLD packaging can provide maximum number of pins on the package due to small size of the pins?

PLCC
QFP
BGA
PGA

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Digital Electronics
A bubbled NAND gate is equivalent to a

 NAND gate
 OR gate
 X-OR gate
 NOR gate

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