• Going to inject some TTL logic in my project

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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 06:24 PM - Hide
      • time to live?
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      • Unregistered coward
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 06:32 PM - Hide
      • That is real old skool
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 06:33 PM - Hide
      • Whats it gonna doo?
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 06:33 PM - Hide
      • what is the obsession tech dweebs have with "injecting"?
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      • SamplesBoi.nli
      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 06:34 PM - Hide
      • . posted:
        Did you score some 74xx chips?

        First thing I bought when I got back into electronics was a Jameco 74LS "kit". Second thing was an Arduino.
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 06:57 PM - Hide
      • I have quite a few 74LS and 74HC chips. Some 4000 series CMOS too. I found some NOS obsolete CMOS crosspoint switches that were designed for telephone networks.
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 07:02 PM - Hide
      • When I went for EE we had two courses to design shit with those. I remember designing a vending machine on some old circuit program (was early 90s). Then I got the chips and built the device(assuming something can detect different coins). What a fucking waste. Totally useless skill.
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 07:03 PM - Hide
      • . posted:
        7400 is so worthless, doubt it is used anywhere anymore. You can get chip that can easily replace hundreds of them for a few pennies.

        That's beside the point. Elementary logic is fun to play with.
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 07:08 PM - Hide
      • Bunch of bitter old buzzkills on this board. :boring:

        HOBBIES SHOULD BE EFFICIENT, COST-EFFECTIVE, AND PRODUCE COMMERCIALLY VIABLE PRODUCTS!
        \
        :snob3:
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 07:11 PM - Hide
      • >TTL logic

        Do you use that to build an ATM machine?

        Lrn2english before I report you to the Department of Redundancy Department.
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      • SamplesBoi.nli
      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 07:12 PM - Hide
      • . posted:
        7400 is so worthless, doubt it is used anywhere anymore. You can get chip that can easily replace hundreds of them for a few pennies.

        I can and do program CPLDs and FPGAs in Verilog but sometimes you just need an AND (or NAND) gate to gate some signal against an enable signal or a HCT138 as a fast decoder. No fucking reason to program and drop in a CPLD in these cases. That's why those ICs are still in production and will remain so probably for quite some time.
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 07:16 PM - Hide
      • SamplesBoi.nli posted:
        I can and do program CPLDs and FPGAs in Verilog but sometimes you just need an AND (or NAND) gate to gate some signal against an enable signal or a HCT138 as a fast decoder. No fucking reason to program and drop in a CPLD in these cases. That's why those ICs are still in production and will remain so probably for quite some time.

        I bought a motherboard a few weeks ago and there were a few tiny 74xx scattered around. I was shocked.
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 07:20 PM - Hide
      • I have an Altera CPLD that I haven't even messed with yet. Getting plenty of mileage out of I2C port expanders and Darlington arrays at the moment.
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 07:22 PM - Hide
      • . posted:
        I bought a motherboard a few weeks ago and there were a few tiny 74xx scattered around. I was shocked.

        They're used as glue logic when you just need a couple of gates rather than a complex IC.
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      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 08:57 PM - Hide
      • I have two radio shack electronics kits in my storage area.
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      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 09:01 PM - Hide
      • I have a gorgeous iPhone 6s which is far more technologically advanced than the puny electronics you people are babbling about.
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      • SamplesBoi.nli
      • Unregistered coward
      • Re: Going to inject some TTL logic in my project
        Posted 03/20/2017 09:01 PM - Hide
      • A non-overlapping 0,1,0 serial bitstream detector as a Moore state machine implemented into 74LS logic circuits (00, 10, and 74) from Finite State Machines in Hardware: Theory and Design (with VHDL and SystemVerilog), 2013, by Volnei A. Pedroni, page 43. My conversion to TTL. His design was meant to be implemented into a CPLD or FPGA.

        Going to inject some TTL logic in my project #1
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