A blog about a computer made from relays - page 9

My journey in constructing an 8 bit relay computer from scratch ... made from of a ton of solder, wires, lights, relays, sweat, tears, swearing and money.

Test Board: Construction

I’ve just realised that as I’ve been constructing the first ALU card I’ve not given much thought to how I’ll actually test the card (or...

10 Dec 2013   —  2 minute read

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ALU Construction: LED Tests

Following on from my last post I can now test the LEDs that have been soldered and hooked up to the header pins on each...

06 Dec 2013   —  1 minute read

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ALU Construction: LED Header Pins

So far, in the construction of the three ALU cards (Logic, Arithmetic and Control) I’ve soldered down the connectors and LEDs. It’s now time to...

05 Dec 2013   —  2 minute read

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Backplane Design and Construction

Originally when I was thinking about how I’d connect up the various cards of this computer I had ribbon cables in mind. Ribbon cables are...

03 Dec 2013   —  4 minute read

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ALU Design: Control Unit

In the last three posts I introduced the design for the 3-to-8 Function Decoder, Zero Detect circuit and the Condition Registers. In this post I’ll...

01 Dec 2013   —  3 minute read

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ALU Design: Condition Registers

This post covers the design of the ALU Condition Registers which along with the 3-to-8 Function Decoder and Zero Detect circuit (both covered in my...

30 Nov 2013   —  3 minute read

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ALU Design: Zero Detect

This post covers the design of the Zero Detect circuit which along with the 3-to-8 Function Decoder (covered in my last post) and the Condition...

23 Nov 2013   —  2 minute read

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