I have come accross this machine, and picked it up for something to have a tinker with.
It's an all transistor construction, not an IC in sight. All made on Vero board, and all wiring done on the back in point to point. I can only imagine how long it took to make this!
The transistors that I can see are 2N1980 and BC108 on the logic boards (must be about 500 by my estimations), while the PSU has an OC25 and TI3027. From what I gather, these devices were popular in the late '60s.
First impressions are good at the state of the machine - a few broken off wires to resolder, PCB fixing brackets to resecure, and the power supply electrolytics look very suspect.
Pictures
I'll take some of my own pictures once i've got a bit more time to have a play with it, but these are from the auction I bought it from.
It's an all transistor construction, not an IC in sight. All made on Vero board, and all wiring done on the back in point to point. I can only imagine how long it took to make this!
The transistors that I can see are 2N1980 and BC108 on the logic boards (must be about 500 by my estimations), while the PSU has an OC25 and TI3027. From what I gather, these devices were popular in the late '60s.
First impressions are good at the state of the machine - a few broken off wires to resolder, PCB fixing brackets to resecure, and the power supply electrolytics look very suspect.
Pictures
I'll take some of my own pictures once i've got a bit more time to have a play with it, but these are from the auction I bought it from.