IBM Experimental Schools Computer

an one frame useful Colin, I am not sure this is not "strictly" true. I attended Darlington Queen Elizabeth 6th Form College and we certainly had a "computer" at that time.When I want in 1970 it was about 2 or three years old. It can't remember the details, but it had 16 or 32 works of memory, and used a serial design. Each bit of memory was a pair of "red spot" germanium transistors, with a flashlamp bulb to show its status. The whole thing was mounted on a board that was about 1.5 Meters square, so you could see the whole of memory. Of course they had used screw in bulbs so the first task was to fill with "1" and then tighten up the bulbs. It was a true computer, in that it had a conditional jump (I don't recall if it was a jump on zero, or non-zero) and store could be used as instructions or data (and also both as the CLEAR instruction had a zero op code and ignored the address, so could be used as a number....) Apparently acording to another former pupil on Friends Reunited:-

It was called DENICE - Darlington's Electronic Number Instant Computer Experiment. There was discussion as to whether it was male or female. Any one else had such a beast.

I think it was based on a design from "wireless world" but much enhanced....

Dave

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