# Blog Posts

## List of all articles (page 8 of 11)

19 Feb 2014 - 1 min read

ALU Construction: Arithmetic Card Wire Wrap 2

I’ve managed to squeeze in a couple more wire wrapping sessions this week so in this post there’s a few photos of progress so far. Inputs B and C are fully wired …

16 Feb 2014 - 2 min read

ALU Construction: Arithmetic Card Wire Wrap 1

Fear not (just in case you were for some reason) all this talk of Sketchup and enclosures and so on hasn’t totally diverted me from the main task of constructing the …

04 Feb 2014 - 2 min read

Sketchy Diversion

I’m taking a break … just a short one. In between all the bouts of wire wrapping for the ALU arithmetic card I’m starting to think about enclosure options …

26 Jan 2014 - 2 min read

ALU Construction: Arithmetic Card Power Rails

Another round of soldering done … this time putting down the power rails on the arithmetic card along with some soldered wire links. This is the last of the soldering …

17 Jan 2014 - 2 min read

ALU Construction: Arithmetic Card Relay Sockets

It’s always a fiddly job getting the relay sockets soldered in and the ALU arithmetic card proved no exception. With this in mind I’ve been spreading the work out …

06 Jan 2014 - 2 min read

ALU Construction: Arithmetic Card Header Pins

Following on from the successful construction of the ALU logic card in my last post it’s time to start off the new year with the next ALU card (number 2 of 3 ALU cards …

18 Dec 2013 - 1 min read

ALU Construction: Logic Card Wire Wrap 3

I’m now just one session of wire wrapping away from a completed ALU logic card. The final job is to wire up the gating relays that select one of the five logic results …

12 Dec 2013 - 2 min read

ALU Construction: 8-bit Logic Unit Tests

There’s now enough sockets, solder and wires to test all eight bits of the ALU logic card. This isn’t quite a full test as the gating relays that apply one of the …

12 Dec 2013 - 1 min read

ALU Construction: Logic Card Wire Wrap 2

Continuing on with the wire wrapping for the ALU logic card next up is the input and result links: Given the limited range of colours I’ve got to choose from (Black, …