Polish clones of the ZX Spectrum. It had a full size keyboard and even a paper holder. The reason it has a paper holder is that the case was originally designed for a small electric organ. A disk drive was available and there also was a version of CP/M called CP\J for this machine. The updated 804 Junior PC had an internal 3.5" diskdrive.
In Poland the computer that won a contest for being the school computer - "Elwro 800 Junior" used DIN connectors for monitor output, cassette adapter, and Junet. Junet had two inputs - in and out(like MIDI). Student computers connected by DIN cables to the teacher's computer, which had the costly floppy drive and printer. Other uses of Junet were for sending messages, or to allow the teacher to see what students are doing on their screens, at the teacher's computer. The computer had also optional Spectrum net, but it was simple jack input/output. To send data the user had to do SAVE on cassette in Spectrum mode, and input had to be connected to Timex/Spectrum. Other ports used D-subminiature connectors, for RGB video, joystick, printer, and floppy drive.
Source: Wikipedia, "List of ZX Spectrum clones", available under the CC-BY-SA License.
From 1985 to 1990 Elwro produced the Elwro 800 Junior microcomputer for education.
Source: Wikipedia, "Elwro", available under the CC-BY-SA License.