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

 –1.5 V and – 5 V
 0 V and 5 V
 5 V and 0 V
 1 V and -5 V

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Digital Electronics
Positive logic in a logic circuit is one in which

logic 0 and, -1 are represented by negative and positive voltages respectively
logic 0 and 1 are represented by 0 and positive voltage respectively
logic 0 voltage level is lower than logic 1 voltage level.
logic 0 voltage level is higher than logic 1 voltage level

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