--- title: Hackaday Europe 2026: The 1-Bit CPU That Ran Factories description: A Hackaday Europe 2026 talk by Nicola Cimmino explores the Motorola MC14500B, a minimalist 1-bit CPU released in 1977 with just 16 instructions and 500... canonical: https://daily.dev/posts/hackaday-europe-2026-the-1-bit-cpu-that-ran-factories-ks7azuz3f twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Hackaday Europe 2026: The 1-Bit CPU That Ran Factories | daily.dev og:description: A Hackaday Europe 2026 talk by Nicola Cimmino explores the Motorola MC14500B, a minimalist 1-bit CPU released in 1977 with just 16 instructions and 500... og:url: https://daily.dev/posts/hackaday-europe-2026-the-1-bit-cpu-that-ran-factories-ks7azuz3f og:image: https://api.daily.dev/og/posts/kS7aZuZ3f.png og:image:alt: Hackaday Europe 2026: The 1-Bit CPU That Ran Factories og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Hackaday Europe 2026: The 1-Bit CPU That Ran Factories **[Hackaday](https://daily.dev/sources/hackaday)** · 4 min read · 0 upvotes · 0 comments ## Summary A Hackaday Europe 2026 talk by Nicola Cimmino explores the Motorola MC14500B, a minimalist 1-bit CPU released in 1977 with just 16 instructions and 500 transistors, costing around $5 compared to the Zilog Z80's 8,500 transistors and $200 price tag. The chip became popular in early programmable logic controllers, replacing bulky relay-based industrial automation. The talk covers its architecture, ladder logic programming, conditional logic, and includes homemade breadboard and custom PCB implementations built by the speaker. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What was the Motorola MC14500B and why was it used in industrial automation? The MC14500B was a minimalist 1-bit CPU released by Motorola in 1977, containing just 16 instructions, a 1-bit logic unit, a result register, and a 1-bit accumulator, built with only about 500 transistors. It cost around $5, far cheaper than 8-bit chips like the Zilog Z80, which used 8,500 transistors and cost about $200 in 1976. Its low cost and simplicity made it popular for powering early programmable logic controllers, replacing bulky relay-based factory automation systems. _Engineers curious about early PLC and industrial logic design can find deep dives like this on daily.dev._ ### How can a minimal system be built around the Motorola MC14500B chip? A minimal MC14500B system requires a counter, external RAM or ROM since the chip has none onboard, plus an 8-bit input decoder and an 8-bit output latch. This configuration only supports combinational logic; feeding outputs back into inputs enables sequential logic by letting the system store its current state, since the chip itself has no internal state storage. _daily.dev surfaces retrocomputing deep dives for engineers piecing together vintage embedded architectures._ ## Similar posts on daily.dev - [Building My Own CPU - Part 3: Just Like the Simulations \(It Was Not Just Like The Simulations\)](https://daily.dev/posts/building-my-own-cpu---part-3-just-like-the-simulations-it-was-not-just-like-the-simulations--us6vslbqv) · Hacker News · 0 upvotes · 0 comments - [Remembering The Zilog Z80 As It Turns Fifty Years Old](https://daily.dev/posts/remembering-the-zilog-z80-as-it-turns-fifty-years-old-okdyjqb4z) · Hackaday · 0 upvotes · 0 comments --- Tags: [#architecture](https://daily.dev/tags/architecture), [#embedded](https://daily.dev/tags/embedded), [#retrocomputing](https://daily.dev/tags/retrocomputing) [View this post on daily.dev](https://daily.dev/posts/hackaday-europe-2026-the-1-bit-cpu-that-ran-factories-ks7azuz3f) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Hackaday Europe 2026: The 1-Bit CPU That Ran Factories","url":"https://daily.dev/posts/hackaday-europe-2026-the-1-bit-cpu-that-ran-factories-ks7azuz3f","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/hackaday-europe-2026-the-1-bit-cpu-that-ran-factories-ks7azuz3f"},"datePublished":"2026-08-19T14:31:46.308Z","dateModified":"2026-08-19T14:44:01.142Z","description":"A Hackaday Europe 2026 talk by Nicola Cimmino explores the Motorola MC14500B, a minimalist 1-bit CPU released in 1977 with just 16 instructions and 500...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/13bc67e30cd85f336f2afa3208ad8e5e?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/13bc67e30cd85f336f2afa3208ad8e5e?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Hackaday","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hackaday","logo":"https://media.daily.dev/image/upload/s--JhDfhy70--/f_auto,q_auto/v1767541814/logos/hackaday","url":"https://daily.dev/sources/hackaday"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/hackaday-europe-2026-the-1-bit-cpu-that-ran-factories-ks7azuz3f","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"architecture,embedded,retrocomputing","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hackaday","item":"https://daily.dev/sources/hackaday"},{"@type":"ListItem","position":3,"name":"Hackaday Europe 2026: The 1-Bit CPU That Ran Factories"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/hackaday-europe-2026-the-1-bit-cpu-that-ran-factories-ks7azuz3f#faq","mainEntity":[{"@type":"Question","name":"What was the Motorola MC14500B and why was it used in industrial automation?","acceptedAnswer":{"@type":"Answer","text":"The MC14500B was a minimalist 1-bit CPU released by Motorola in 1977, containing just 16 instructions, a 1-bit logic unit, a result register, and a 1-bit accumulator, built with only about 500 transistors. It cost around $5, far cheaper than 8-bit chips like the Zilog Z80, which used 8,500 transistors and cost about $200 in 1976. Its low cost and simplicity made it popular for powering early programmable logic controllers, replacing bulky relay-based factory automation systems. Engineers curious about early PLC and industrial logic design can find deep dives like this on daily.dev."}},{"@type":"Question","name":"How can a minimal system be built around the Motorola MC14500B chip?","acceptedAnswer":{"@type":"Answer","text":"A minimal MC14500B system requires a counter, external RAM or ROM since the chip has none onboard, plus an 8-bit input decoder and an 8-bit output latch. This configuration only supports combinational logic; feeding outputs back into inputs enables sequential logic by letting the system store its current state, since the chip itself has no internal state storage. daily.dev surfaces retrocomputing deep dives for engineers piecing together vintage embedded architectures."}}]} ```