SEL Z80 Trainer and TEL Control Box

The Z80-Trainer is an experimental computer from SEL Standard Elektrik Lorenz AG Lehrmittel, used mainly in schools. Designed for education, it provides a practical demonstration of assembly programming with the Z80.
In addition to the main computer there was a control box of the TEL-GmbH, which was also at home in Pforzheim, with which different circuits can be set up and programmed. Students can program their own traffic light control, stepper motors, linear motor with light barriers, sound generators, and control binary inputs and outputs, LEDs.
There are 2 plug-in cards for the control box. An interface that connects the box directly to the Z80 trainer, and a second plug-in card for the computer. An instruction for programming is included.
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