1. The problem statement, all variables and given/known data In this book of mine , I saw this statement,"The digital-system designer is restricted to the use of binary signals because of the lower reliabilty of many-valued electronic circuits." . Why is so? How can we say that the many-valued electronic circuits are not reliable? 2. Relevant equations ~nil~ 3. The attempt at a solution A binary signal has 0s and 1s. A hexal signal has 0s, 1s, 2s, 3s, 4s, and 5s. Therefore a hexal signal has more discrete input signals than a binary signal. But the thing I don't understand is that why do they say the other signals are unreliable?