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Digital Electronics

Digital Electronics
ASCII code is a

 8-bit code
 10-bit code
 7-bit code
 5-bit code

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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?

 90 mV.
 900 mV.
 300 mV.
 30 mV.

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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
Which of the following logic circuits is the fastest ?

 RTL.
 TTL.
 DTL.
 All have same speed.

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Digital Electronics
XNOR followed by a NOT gate is equivalant to ________ gate

 NOR
 OR
 XOR
 XNOR

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Digital Electronics
A digital circuit that can store on bit is a

 XOR gate
 registor
 gate
 flip-flop

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