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Digital Electronics

Digital Electronics
(44)8 in BCD 8421 code is

 01000100
 00100100
 01100011
 00110110

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Digital Electronics
How many stable state/states present in flip-flop ?

 2
 1
 4
 3

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

 1100
 0011
 1001
 1000

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Digital Electronics
10’s complement of 63325600 is

 366744399
 36674400
 633256600
 36774400

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Digital Electronics
A read only memory in which the present contents must be erased before the new information can be stored is

 EAROM
 PROM
All of these
 ROM

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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.
 300 mV.
 900 mV.
 30 mV.

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