Backplane Cards

List of articles related to the 'Backplane' cards

Not a single card but actually one of four … and technically not a card at all but they are card shaped. These are the ‘cards’ that connect a group of five cards together in each card bay (W, X, Y and Z). Each carries a selection of lines and busses to the cards it holds and also hosts connections to the ribbon cables taking the busses and control lines of to other backplane cards and areas of the computer.

Below is a list of the blog articles relating to this card (in reverse date order):


Backplane W v2


Backplane X


Backplane Y v2


Backplane Z v2

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05 Nov 2022 - 3 min read

Back to Backplanes

Quite a while ago I decided to give up on the tedious wire wrap technique for building my cards. Although it was certainly more authentic and in-keeping with my …

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04 Mar 2019 - 12 min read

Making a PCB

After years of using pad/prototyping boards to build my computer I’ve decided to switch things up a bit and have a go at making a custom PCB. The thinking is that it …

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14 Jan 2019 - 6 min read

A change of approach

In my last post I touched on how the repetitive nature of making register cards has been putting me off progressing my relay computer. If you’ve followed my blog (over …