3 ms·
That having been said, the AVR chips are probably a lot more useful to learn as a newbie these days. Not many people using discrete logic ICs anymore I dunno.
by mindcrime 3y ago
That having been said, the AVR chips are probably a lot more useful to learn as a newbie these days. Not many people using discrete logic ICs anymore
I dunno. I mean, there's no question that they are less widely than in their heyday. But I think there might be a surprising number of uses where they are used for some small (very small) bit of functionality where even the smallest microcontroller is overkill.
In my own experience, I had something recently where I literally needed a single AND gate to switch a transistor on or off based on whether one or both of two power rails were HIGH. A discrete 74xx chip turned out to be the simplest way to implement that.
- HeyLaughingBoy 3y agoI'd say that pretty much every schematic I've reviewed in the last few years has a handful of logic on it. Often we need to guarantee that something is off or disconnected if the CPU fails or software crashed, etc. Hard-wired logic is good for that kind of thing.
- zh3 3y agoTi have long had "little logic" for this kind of thing (I've been out of that game for a while, maybe something has taken its place?) 2018 link (PDF): https://www.ti.com/lit/pdf/scyt129 https://www.ti.com/lit/pdf/scyt129
- mindcrime 3y agoHey, thanks, I did not know about the "little logic" stuff until just now. I'd always looked at the 7400 series chips (or 4000 series chips) as my "goto's" for one-off individual logic gate kind of stuff.
- mindcrime 3y agos/widely than/widely used than/ How the heck did I just leave an entire word out? sigh