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Digital Electronics

Digital Electronics
How many bits are required to store one BCD digit ?

 3
 2
 4
 1

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Digital Electronics
A Nibble is equal to ________ bit(s)

 8
 1
 4
 2

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Digital Electronics
8421 code is

 weighted code
 non-weighted code
 self-complementing code
 alphanumeric code

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

NOT gates
OR gates
NAND gates
None of these

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Digital Electronics
The set of which logic gates is designated as universal gate?

 NOT, OR , AND.
 XNOR, NOR, NAND.
 XNOR, NOR, NAND.
  NOR , NAND.

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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.
 30 mV.
 300 mV.

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