The Descendants of Ancient Computers

Building computers from discrete components is a fairly common hobby project, but it used to be the only way to build a computer until integrated circuits came on the scene. If you’re living in the modern times, however, you can get a computer like this running easily enough, but if …read more

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Building Video Pong With Discrete Components

Pong is a classic from the very dawn of the video game era. Recreating it remains a popular exercise for those new to coding. However, its simple logic makes this game particularly suited to an all-hardware build; something which [Glen] tackles with aplomb.

Not content to take the easy way …read more

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Logic and EEPROMs bring VGA to Life, Sans Microcontroller

For whatever reason, the Video Graphics Array standard seems to attract a lot of hardware hacks. Most of them tend to center around tricking a microcontroller into generating the signals needed to send images to a VGA monitor. We love those hacks, but this one takes a different tack – …read more

Continue reading Logic and EEPROMs bring VGA to Life, Sans Microcontroller

Logic and EEPROMs bring VGA to Life, Sans Microcontroller

For whatever reason, the Video Graphics Array standard seems to attract a lot of hardware hacks. Most of them tend to center around tricking a microcontroller into generating the signals needed to send images to a VGA monitor. We love those hacks, but this one takes a different tack – …read more

Continue reading Logic and EEPROMs bring VGA to Life, Sans Microcontroller

Discrete Pong Project Goes Big, Adds a Player

Some projects just take on a life of their own. What started as a pleasant diversion or a simple challenge becomes an obsession, and the next thing you know you’ve built a two-player color Pong game with audio completely from discrete components.

If this one seems familiar, it’s because we were dazzled by its first incarnation last year. As impressive as version 1.0 was, all the more so since it was built using the Manhattan method and seemingly over the course of a weekend, it did have its limitations. [GK] has been refining his design ever since and keeping accurate …read more

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Hackaday Prize Entry: A Mess Of VGA On A Breadboard

Before all our video games came over the Intertubes, before they were on CDs, and before they were on cartridges, video games were all discrete logic. Pong was the first and you can build that out of several dozen logic chips. The great [Woz] famously built Breakout out of 44 simple chips.

For [Marcel]’s entry to the Hackaday Prize, he’s taking the single board microprocessor-less computer to the next level. He’s building a multi-Megahertz 64-color computer on a breadboard. What’s the capacitance of a breadboard? Just ask [Marcel].

The design of this disintegrated computer has just about everything you could …read more

Continue reading Hackaday Prize Entry: A Mess Of VGA On A Breadboard

Hackaday Prize Entry: A Mess Of VGA On A Breadboard

Before all our video games came over the Intertubes, before they were on CDs, and before they were on cartridges, video games were all discrete logic. Pong was the first and you can build that out of several dozen logic chips. The great [Woz] famously built Breakout out of 44 simple chips.

For [Marcel]’s entry to the Hackaday Prize, he’s taking the single board microprocessor-less computer to the next level. He’s building a multi-Megahertz 64-color computer on a breadboard. What’s the capacitance of a breadboard? Just ask [Marcel].

The design of this disintegrated computer has just about everything you could …read more

Continue reading Hackaday Prize Entry: A Mess Of VGA On A Breadboard

Relay Computer: You Can Hear It Think

Modern digital computers have complex instruction sets that runs on state-of-the-art ALUs which in turn are a consequence of miniaturized logic gates that are built with tiny transistors. These tiny transistors are essentially switches. You could imagine replacing with electromagnetic relays, and get what is called a relay computer. If you can imagine it, someone’s done it. In this case, [jhallenworld].

The Z3 was the first working programmable, fully automatic digital computer designed by Konrad Zuse. The board employs modern semiconductor devices such as memory and microcontrollers, however, the CPU is all relays. A hexadecimal keyboard allows for program entry …read more

Continue reading Relay Computer: You Can Hear It Think

Relay Computer: You Can Hear It Think

Modern digital computers have complex instruction sets that runs on state-of-the-art ALUs which in turn are a consequence of miniaturized logic gates that are built with tiny transistors. These tiny transistors are essentially switches. You could imagine replacing with electromagnetic relays, and get what is called a relay computer. If you can imagine it, someone’s done it. In this case, [jhallenworld].

The Z3 was the first working programmable, fully automatic digital computer designed by Konrad Zuse. The board employs modern semiconductor devices such as memory and microcontrollers, however, the CPU is all relays. A hexadecimal keyboard allows for program entry …read more

Continue reading Relay Computer: You Can Hear It Think

Dis-Integrated 6502 Running Programs; Acting Like Computer

[Eric Schlaepfer] tends to turn up to Maker Faire with projects you simply don’t want to miss. This year is no different. Twelve months ago we delighted in seeing his 6502 processor built from an enormous reel of discrete MOSFETs. At the time it was freshly built and running random code to happily blink the LEDs reflecting activity in the registers. This year he’s given that blinking meaning and is running real programs on his Monster 6502 processor.

A processor isn’t a computer until the peripherals are built up around it. He’s done that with a new board called the …read more

Continue reading Dis-Integrated 6502 Running Programs; Acting Like Computer