Electronics > Beginners
What logic and digital chips to get ?
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lordvader88:
I only have a few types of CMOS 4000 chips and old version 7400 series, and not many of any of them. I'll make a full list later. I have some decade counters, cd4026, ripple counters, NAND, AND, OR, hex inverters,

I don't have any ADC or DAC chips that I know of, they seem expensive too. I have an Ardino that I'll learn again sooner or later.

I have some random collection of MP3 players, radio's, DVD players, TVs, printers, etc that I've scrapped and horded, and so have a handful of small RAM chips, eprom's, processors, multiplexer's, modern CMOS and new 74 series, and whatever all else. Mostly SMD parts.

I have a full big set of basic 2 pin crystals for timers. I have copper clad boards for high frequency stuff.

So for hobby projects I want to get add some more logic chips and digital stuff in general. So fire away chip names to add to the list ,thanks
cur8xgo:

--- Quote from: lordvader88 on June 13, 2019, 06:55:31 am ---I only have a few types of CMOS 4000 chips and old version 7400 series, and not many of any of them. I'll make a full list later. I have some decade counters, cd4026, ripple counters, NAND, AND, OR, hex inverters,

I don't have any ADC or DAC chips that I know of, they seem expensive too. I have an Ardino that I'll learn again sooner or later.

I have some random collection of MP3 players, radio's, DVD players, TVs, printers, etc that I've scrapped and horded, and so have a handful of small RAM chips, eprom's, processors, multiplexer's, modern CMOS and new 74 series, and whatever all else. Mostly SMD parts.

I have a full big set of basic 2 pin crystals for timers. I have copper clad boards for high frequency stuff.

So for hobby projects I want to get add some more logic chips and digital stuff in general. So fire away chip names to add to the list ,thanks

--- End quote ---

After a couple decades of collecting logic chips..what I've learned is that ORGANIZING the chips in a way where you know what you have and can browse easily and get the chip you want fast is at least as important as your selection.

Chips are cheap and easy to get. But if they are all stuck on anti static foam floating around in a grab bag that you have to spend 15 minutes looking through just to see if you have something..they are all basically useless

rstofer:
And in this age, what use are discrete logic chips?  I have a BUNCH of chips and haven't used any in years.  If I have a logic design, I'll use a CPLD or FPGA.  Among other things, this eliminates hours of wire-wrapping.  Yes, I have a cut-strip-wrap gun but I haven't used it in many years.  Too much Low Scale Integration (LSI) will drive you nuts.  Furthermore, I can save room for feature creep without needing board space or sockets.

Then there is the low probability that my wire wrapped circuit actually does what it needs to do.  Yes, it will do what I told it to do but I didn't necessarily understand the problem.  A few lines of HDL will solve that issue!

If the design lends itself to a firmware solution, I'll use an Arduino or even an ARM chip.

Low level chips just aren't used much unless it is to build a specific Internet project.  I might buy what I need but I wouldn't stock any.
Zero999:
You don't really need discreet logic nowadays, so there's no point in having a massive stock. There are times when it can be useful though. The 74HCT parts can be useful for translating from 3V to 5V logic, so some 74HCT14 will be handy.
bsudbrink:

--- Quote from: cur8xgo on June 13, 2019, 03:32:46 pm ---After a couple decades of collecting logic chips..what I've learned is that ORGANIZING the chips in a way where you know what you have and can browse easily and get the chip you want fast is at least as important as your selection.

Chips are cheap and easy to get. But if they are all stuck on anti static foam floating around in a grab bag that you have to spend 15 minutes looking through just to see if you have something..they are all basically useless

--- End quote ---

Amen brother!  I'll add that some electronic list... spreadsheet or just a simple text file makes them more useful still.
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