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Digital Electronics

Digital Electronics
Four ROM chips of 16 × 4 size have their address buses connected together. This system will be of size

 16 × 16
 64 × 4
 32 × 8
 256 × 1

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Digital Electronics
A full adder has

 3 inputs, 2 outputs
 3 inputs, 1 output
 2 inputs, 2 outputs
 2 inputs, 1 output

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 0. The gate is either

 an OR or an X-OR
 an AND or a NOR
 a NAND or an X-OR
 an OR or an X-NOR

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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.
 30 mV.
 900 mV.

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Digital Electronics
The implicants which will definitely occur in the final expression are called

 redundent prime implicants
 essential prime implicants
 prime implicants
 selective prime implicants

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Digital Electronics
A Binary number system has how many digits.

 1
 10
 0
 2

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