This professional computer was compatible with most of the hardware and software designed for the Apple II.
It could run under DOS 3.x, but thanks to its second CPU, a Z80 processor, it could also run under CP/M.
The Basis 108 had 128 KB RAM, (two switchable memory banks of 64k).
Two 5"1/4 disk-drives (Apple compatible) could also be mounted inside the computer. In the picture, these are Apple Disk II drives.
The Basis 108 was a good Apple II compatible machine with a lot of options built-in (80 columns, disk-drives controller, CP/M, high-resolution graphics), and was cheaper than the equivalent Apple system...
A year after introduction, the Basis Junior was presented at various different electronic shows. It was basically the same computer but with only 64 KB RAM (with optional expansion to 128k).