News & Articles

PyroEDU
Get started learning to build your own electronics by following our FREE online courses below!
Learn More »

Categories

Sponsors

Build Like A Pyro!
Find many of the parts used on this site at our favorite online electronics shop
Take Me To The Gadgetory!
TTL Logic Beeping Down Counter

Posted October 20, 2011 by Chris

My crazy 7400 logic circuits continue with this week’s parody of a movie prop from Iron Man 2. The circuit built in this project is a beeping down counter and since I didn’t see this classic circuit entered into the 7400contest, I figured there’s time left for one last entry. Just like in Iron Man 2 there’s a little red button to start the countdown, a dual 7 segment led display and a nice ‘beep’ for each count.

14 Responses to “TTL Logic Beeping Down Counter”

  1. Anonymous Says:

    [url=http://www.eevance.com/tokei/zenith/index.html]?????????????????????????????????????????????????Indy????Racing League?????Danica Patrick??????????????????????????????????????????????????????????????????????????????????????[/url]

  2. Anonymous Says:

    [url=http://www.ooowatch.com/tokei/vuitton/index.html]????????????????????????TIMEX?????????2008?12?8???14????????????2??1?????????????????????????????????????????????TIMEX??????????????????????????????????????SL???????????????????TIMEX?????????????????????????????????????T??????????????????????TIMEX???????????????????????????????????????????????????????????1???????????????????????????????????????????[/url]

  3. Anonymous Says:

    [url=http://www.newkakaku.com/cq19.htm]Q???????????????????????Q??????????????????????????????????Millenary????????????????????????????????????????????????????????CEO???????????Merk????????????????????????????????????1??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????135??????????????????????????????????????????????????????????MILLENARY????????????????Quincy??????????????????????????????????????????????????????????????????Millenary?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????Millenary Quincy?????–?????Edition??????????????500????????????????????????????????????????????AP?????????????????????????????????2000????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????[/url]

  4. Anonymous Says:

    [url=http://www.newkakaku.com/lb5.htm]???????????????????????1????????????????????????????????????????????????????????????????????????????????????????????????? ????????? ??????????????????ar??????????????????????????????????????????????????????[/url]

  5. Anonymous Says:

    [url=http://www.gginza.com/%E3%82%A2%E3%83%90%E3%82%A6%E3%83%88/item_10.html]2010?7?8???????????????????????????????????????????????Quincy?????????????????CEO???????????Merk?????????????????????????????????????????????????????????????????????????????????????????????????????????MILLENARY????????????????Quincy?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????Quincy??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????Frank Sinatra???????????Barbara Streisand????•???????Tony Bennett??????????????????1978????????????????????????MichaelJackson????????????????????????????????3????????????????????????????????????????????????????????????????????????Q????????????????????????????????????????????????????????46??????We??the World?????????????????????????????????????????????????????????????????????????????????????????????????????????????????Q?????????????????????????????????????????????????????[/url]

  6. proxy server list Says:

    Hi there,I log on to your blog named “TTL Logic Beeping Down Counter | PyroElectro – News, Projects & Tutorials” regularly.Your writing style is awesome, keep doing what you’re doing! And you can look our website about proxy server list.

  7. look what you made me do lyrics Says:

    Nice shearing. Great work.

  8. Haywood Parlow Says:

    Jasa Kontraktor Kolam Renang, Perawatan Dan Renovasi Kolam Renang Murah Legal Bertestimoni Mengutamakan Mutu Dan Kuwalitas Melayani Semua Indonesia … tap https://kolam-bening.blogspot.com/2019/01/jasa-treatment-air-kolam-renang-bukit.html untuk lebih lanjut

  9. Shae Chamberlian Says:

    Solid phenolic is the absolute most durable material in the world for the manufacturing of toilet partitions. It is a high density material made by applying heat and pressure … klik https://medium.com/@toiletcubiclephenolic/cubicle-toilet-phenolic-balikpapan-ukuran-per-m2-custom-murah-b5e31f95da03 for detail information.

  10. Jerrold Jui Says:

    Perusaan Betching Plant Yang Memproduksi Beton cor pracetak, beton segar yang belum mengalami pengerjaan pengikatan dan … kunjungi https://harga-pipa-drainase-megaconperkasa.blogspot.com/2019/12/harga-pipa-drainase-1-bengkulu-0852.html

  11. Emerald Arrowsmith Says:

    Kaca Tempered (Kaca Diperkeras) adalah kaca dengan memanaskan float glass biasa sampai mencapai suhu sekitar 700 °C kami berada di … untuk detail silahkan kunjungi https://medium.com/@kacatempered/

  12. Ara Dolton Says:

    Epoxy is a lasting adhesive used on various types of surfaces, from plastic to metal. … Epoxy starts in a fluid state. Since it is combined, the substance’s temperature heats… tap https://injeksibeton.jabodetabek.my.id/2020/08/jasa-injeksi-beton-1-bogor-081297462407.html for detail.

  13. Veda Pinn Says:

    PabrikPintu.co.id, Indonesian’s prime door supplier in the best array of advanced front doors including trendy, climate tolerant atomic number 13 the front doors, visit https://pabrikpintualuminium.blogspot.com/2020/04/jual-pintu-alumunium-kusen-alumunium-1_941.html for more detail.

  14. Alyse Janco Says:

    Just pick up the phone once you need towing, or any other roadside assistance, or car lockout services. It doesn’t matter where … tap https://alatberatid.livejournal.com/385.html for detail

Leave a Reply