Two reservoirs R 1 and R2, the level of each of whichis controlled by a detector of
high level (a for R1, b for R2) and a low level detector (c for R1,d for R2). When these sensors detect the presence of the liquidthey are at level 1.
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There are three LEDs V1, V2, V3, which operate under the followingconditions:
V1 = 1 if both tanks are full.
V2 = 1 if both tanks are empty.
V3 = 1 in all other cases (tank half full or full one empty...).
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A number of combinations are technologically impossible, theoutputs V1, V2,
V3, will take in these cases an indifferent value (X).
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1. Establish the truth table of this system.
2. Determine simplified logic equations using Karnaugh'stables.
3. Give the V1, V2, V3 circuits with doors.
