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Category Archives: logic

Op-Amp Challenge: A Logic-Free BCD

Posted on June 9, 2023 by Dan Maloney

Of digital electronics, a wise man once said that “Every idiot can count to one.” Truer words have rarely been spoken, because at the end of the day, every digital …read more Continue reading Op-Amp Challenge: A Logic-Free BCD→

Posted in analog, bcd, comparator, contests, converter, counter, lm324, logic, Op Amp Challenge, Widlar

Hackaday Prize 2023: Building a Relay ALU

Posted on June 1, 2023 by Dave Rowntree

There’s much truth in the advice that, to truly understand something, you need to build it yourself from the ground up. That’s the idea behind [Christian]’s entry for the Re-engineering …read more Continue reading Hackaday Prize 2023: Building a Relay ALU→

Posted in 2023 Hackaday Prize, adder, ALU, arduino, computer hacks, logic, relay, The Hackaday Prize | Tagged Computer

ChatGPT Powers a Different Kind of Logic Analyzer

Posted on April 7, 2023 by Dan Maloney

If you’re hoping that this AI-powered logic analyzer will help you quickly debug that wonky digital circuit on your bench with the magic of AI, we’re sorry to disappoint you. …read more Continue reading ChatGPT Powers a Different Kind of Logic Analyzer→

Posted in ai, chatbot, ChatGPT, logic, logical fallacy, Machine Learning, speech to text, SPP, Whisper

Retrotechtacular: Critical Code Reading, 70s Style

Posted on January 5, 2023 by Dan Maloney

Anyone who has ever made a living writing code has probably had some version of the following drilled into their head: “Always write your code so the next person can …read more Continue reading Retrotechtacular: Critical Code Reading, 70s Style→

Posted in COBOL, coding, logic, PL/1, retrotechtactular, Retrotechtacular, standards, structured programming

Logic Gate Game Is Fun AND Educational

Posted on December 30, 2022 by Kristina Panos

How well do you know your logic gates? For their final submission for STEM Projects class, [BKriet] gamified the situation using a Raspberry Pi Pico, some blinkenlights, and a not-insignificant …read more Continue reading Logic Gate Game Is Fun AND Educational→

Posted in game, games, logic, logic gates, Raspberry Pi, Raspberry Pi Pico

Should’ve Used a 555 — Or 276 of Them

Posted on August 10, 2022 by Dan Maloney

When asked to whip up a simple egg timer, most of us could probably come up with a quick design based on the ubiquitous 555 timer. Add a couple of …read more Continue reading Should’ve Used a 555 — Or 276 of Them→

Posted in 555, clock hacks, discrete, flip-flop, latch, logic, parts, should have used a 555, timer | Tagged gate

Mysterious Adder from 1960s Bendix G-20

Posted on June 25, 2022 by Chris Lott

[David Lovett] aka Usagi Electric is taking a dive into yet another old computer design, this one from the early 1960s. He recently obtained eight mystery circuit boards on-loan for the …read more Continue reading Mysterious Adder from 1960s Bendix G-20→

Posted in adder, Bendix, G-20, logic, mainframe computer, retrocomputing, Reverse-engineering

Remoticon 2021 // Voja Antonic Makes You a Digital Designer

Posted on January 27, 2022 by Dave Rowntree

[Voja Antonic] has been building digital computers since before many of us were born. He designed with the Z80 when it was new, and has decades of freelance embedded experience, …read more Continue reading Remoticon 2021 // Voja Antonic Makes You a Digital Designer→

Posted in 2021 Hackaday Remoticon, cons, Digital electronics, Hackaday Columns, logic, Microcontrollers, Voja Antonic

555 Timer on its Own In Electronic Dice

Posted on January 8, 2022 by Bryan Cockfield

One of the most common clichés around here is that a piece of equipment chosen for a project is always too advanced. If a Raspberry Pi was used, someone will …read more Continue reading 555 Timer on its Own In Electronic Dice→

Posted in 555, cd4017, clock, clock hacks, dice, logic, NE555, random number, timer | Tagged Circuit, Electronic

Apollo DSKY Display Glows Again

Posted on August 2, 2021 by Dan Maloney

We love seeing old technology brought back to life, especially when it’s done in the context of how the device was originally intended to be used. And double points when …read more Continue reading Apollo DSKY Display Glows Again→

Posted in agc, Apollo Guidance Computer, display and keyboard, DSKY, logic, phosphor, relay, retro, retrocomputing, Space | Tagged Apollo, Spaceflight

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