11 Nov 2013 - 5 min read
This post covers the design of a 1-bit Logic Unit that can produce AND, OR, XOR, NOT and SHL (Shift Left) outputs from two input bits B and C. Here’s a schematic of the …
10 Nov 2013 - 6 min read
If there’s one thing a relay computer needs a lot of it’s … erm … relays (of course) … which happens to be a bit unfortunate as relays, …
07 Nov 2013 - 1 min read
In the last post I promised to reveal the planned instruction set for the computer and here it is (pdf file). This should be viewed alongside the architecture diagram which …
07 Nov 2013 - 4 min read
Architectural breakdown: Programming and Control 2
So, the last post didn’t quite wrap up this ‘mini-series’ but hopefully this one will. Continuing on with how the Programming and Control of the computer …
07 Nov 2013 - 8 min read
Architectural breakdown: Programming and Control
In this post I’ll wrap up this ‘mini-series’ of trying to explain away the various bits of the architecture that will make up my relay computer project — …
07 Nov 2013 - 4 min read
Architectural breakdown: the ALU
In this post I’ll continue to try and explain away the various bits of the architecture that will make up my relay computer project — this time it’s the Arithmetic …
06 Nov 2013 - 5 min read
Architectural breakdown: Memory
In this post I’ll continue to try and explain away the various bits of the architecture that will make up my relay computer project — this time it’s the memory. …
05 Nov 2013 - 4 min read
Architectural breakdown: Buses and Registers
In this post I’ll continue to try and explain away the various bits of the architecture that will make up my relay computer project — this time it’s buses and …
04 Nov 2013 - 7 min read
Architectural breakdown: Binary
… and it all begins with binary. Binary is a ‘base 2’ numbering system which means it uses the numbers 0 and 1. In contrast humans tend to use decimal (base …
04 Nov 2013 - 2 min read
Architecture isn't just for houses
So, with the scene now set (see previous posts) let’s dive right in and take a look at the system architecture I’ll be building my computer upon … here it …
03 Nov 2013 - 4 min read
It strikes me that when embarking on a project like this there’s three things that are of uttermost importance, the three Rs if you will: Research, research and …