How things have changed. I did this drawing way back on the 17th December 1996. It was to match the layouts of six boards I'd made for classes to use for fault-finding on electronic components. The logic type integrated circuits (ICs)that each board had one of, are barely used now, with multiple ones now replaced by single, smaller programmable devices. Another big change, is that I'd take a digital photo of the boards now, rather than spending a long time doing such a drawing. I did enjoy doing technical type drawings, and did loads of them, of all sorts of things.

Rather than keeping folders of these old drawings, have been scanning them to Portable Document Format (PDF) type files, and disposing of others, like the above, that are no longer relevant. The actual boards were disposed-of/dismantled/recycled several years ago, before we left the old building. Did take a photo of them, but can't remember if I used it for a Blip. Did Blip a huge pile of ICs that were 'blitzed' back then, and plenty other stuff.