dual input channel selector

7-78 — elektor july/august 1981 dual input channel selector The circuit described in this article is a different kind of solution to the 16 channel multiplexer described in the previous article. It is not difficult to imagine that binary control is not what all our would like, mainly because of its rather readers would additional same components it is posse function with only two buttons. This makes t e unit a lot easier to operate. The only controls in this instance are a touch button to count up and another one to count down through the channels. Further- more, instead of having a binary display using four LEDs as in the previous case, the actual channel and not 0 . .. 15 as nusual mode of operation. With a few n number is indicated o a nine-seg I to perform the This one-and-a-half digit display requires a special type of decoder (the SN 29764). ice the circuit itself in greater the display lust long enough for on - . 450 mS). As soon as the Let us now e and detail. The clock ...