With a 555 on the BOM, you never know what you’re going to get. With 40 of the versatile timer chips in a build, you might just get something completely unexpected, like this 555-based eight-bit ...
Two multifunction I/O modules feature both digital I/O and counter/timer functions on a single PMC module. The PMC424 provides 40 digital I/O channels for transistor-transistor logic (TTL) and ...