{"id":6198,"date":"2012-11-02T23:00:08","date_gmt":"2012-11-03T03:00:08","guid":{"rendered":"http:\/\/embedded-lab.com\/blog\/?p=6198"},"modified":"2012-11-02T23:00:08","modified_gmt":"2012-11-03T03:00:08","slug":"1-mhz-frequency-counter-using-discrete-cmos-ics","status":"publish","type":"post","link":"https:\/\/embedded-lab.com\/blog\/1-mhz-frequency-counter-using-discrete-cmos-ics\/","title":{"rendered":"1 MHz frequency counter using discrete CMOS ICs"},"content":{"rendered":"<p>Miguel Pedroso constructed\u00a0a <a href=\"http:\/\/miguelpedroso.com\/?p=714\" target=\"_blank\">digital frequency counter<\/a> using CMOS 4000 series logic chips to participate in the <a href=\"http:\/\/dangerousprototypes.com\/open7400\" target=\"_blank\">Dangerous Prototypes&#8217; 2012 Open 7400 contest<\/a>. It can measure frequencies up to\u00a0999.999 KHz.<\/p>\n<div id=\"attachment_6199\" style=\"width: 570px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2012\/11\/CMOS_FCounter.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6199\" class=\"size-full wp-image-6199\" title=\"CMOS_FCounter\" src=\"http:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2012\/11\/CMOS_FCounter.jpg\" alt=\"\" width=\"560\" height=\"873\" srcset=\"https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2012\/11\/CMOS_FCounter.jpg 560w, https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2012\/11\/CMOS_FCounter-416x650.jpg 416w\" sizes=\"auto, (max-width: 560px) 100vw, 560px\" \/><\/a><p id=\"caption-attachment-6199\" class=\"wp-caption-text\">Frequency counter using CMOS 4000 series logic chips<\/p><\/div>\n<p>The project uses six 4029 4-bit counter ICs that are cascaded and configured to work in the BCD decade up counters. The measured frequency is displayed on six 7-segment LEDs, each driven by the 4511 BCD-to-Seven segment driver chip.<\/p>\n<p>Via: <a href=\"http:\/\/dangerousprototypes.com\/2012\/11\/02\/7400-competition-entry-cmos-frequency-counter\/\" target=\"_blank\">Dangerous Prototypes<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Miguel Pedroso constructed\u00a0a digital frequency counter using CMOS 4000 series logic chips to participate in the Dangerous Prototypes&#8217; 2012 Open 7400 contest. It can measure frequencies up to\u00a0999.999 KHz. The project uses six 4029 4-bit counter ICs that are cascaded and configured to work in the BCD decade up counters. The measured frequency is displayed on six 7-segment LEDs, each driven by the 4511 BCD-to-Seven segment driver chip. Via: Dangerous Prototypes<\/p>\n","protected":false},"author":1,"featured_media":6199,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[227],"tags":[494,112],"class_list":["post-6198","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-cmos-4000","tag-frequency-counter"],"_links":{"self":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/6198","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/comments?post=6198"}],"version-history":[{"count":1,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/6198\/revisions"}],"predecessor-version":[{"id":6200,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/6198\/revisions\/6200"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media\/6199"}],"wp:attachment":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media?parent=6198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/categories?post=6198"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/tags?post=6198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}