A small relay computer using modern relays.

I have slowly been working on a relay computer. It uses modern, small, relays and will have
a paper tape I/O syetem. There will also be a numeric display and a simple graphic display.
The CPU has an 8 bit data / 16 bit address bus much like a Z80 processor. It's going to have a
full front panel allowing access to most functions. I still have a very long way to go.

Control panel. A whole bunch of illuminated switches, hand wired.

Full front panel. Right side. Left side.
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Insides. Wiring. Connectors.
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Circuit boards.

ALU board. Registers. Memory address registers. ROM boot board. Motherboard.
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Paper tape reader. This is a fully mechanical reader using a "star wheel" and solenoids.

Front. Rear.
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Decimal display units, light projection type.

These displays have 12 lamps and a film that has 0-9 and a left & right dot.
The digit on the film is projected onto the front plastic.
I'm building a relay based BCD decoder to drive 16 of these displays for numeric indication.

Six displays. Rear view. Projected digit.
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"Flip Disc" matrix display, 16 x 20.

I'm planning on using two of these displays wired up as an 80 byte memory.
They will show the contents of the memory directly, forming a crude graphics display.

Front. Rear.
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