Elektor published in 1978 the Elekterminal design: a video display unit and an ASCII keyboard for computer systems with serial interface.

Over the years the design evolved and many articles were published. Among other systems, it was also integrated with the Junior computer.
The Juinor book 3 contains a detailed description how to combine Elekterminal and Junior via the bit banged serial TTY interface.

The video display was later replaced with a videocard, the serial ASCI keyboard stayed as option.

Articles and books in English about the Elekterminal

Elekterminal articles 1978-1980
Junior book 3
the Elekterminal with a printer
lowercase and special characters on the elekterminal
Elekterminal bell
Elekterminal character generator with lowercase, 2716 EPROM image