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Digital Electronics

Digital Electronics
A multiplexer is a

 N-to-N device
 1-to-1 device
 N-to-1 device
 1-to-N device

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 1’s complement is used to represent the numbers, then the range will be

 -256 to 255
 -128 to 127
 -127 to 127
 -256 to 256

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Digital Electronics
AND operation of (79)10 & (-56)10 is

 08H
 48H
 50H
 42H

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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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Digital Electronics
The inputs of a NAND gate are connected together. The resulting circuit is ___________.

None of these
AND gate
OR gate
NOT gate

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Digital Electronics
Queue is also known as

 LILO memory
 LIFO memory
 FIFO memory
 Flash memory

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