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Digital Electronics

Digital Electronics
In SSI, the number of gate circuits per chip is

 < 25
 < 12
 < 6
 < 20

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Digital Electronics
A device which converts decimal number into BCD form is called

 decoder
 encoder
 multiplexer
 code converter

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Digital Electronics
The output of a logic gate is 1 when all its inputs are at logic 1. The gate is either

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

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Digital Electronics
(FE35)16 XOR (CB15)16 is equal to

 (FF50)16
 (3520)16
 (FF35)16
 (3320)16

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to negative logic system.

 5 V and 0 V
 –1.5 V and – 0.5 V
 1 V and 5 V
 0 V and 5 V

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Digital Electronics
What logic function is produced by adding an inverter to each input and output of an OR gate?

 NOR
 X-OR
 AND
 NAND

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