This is probably one of the more unusual machines of my collection. According to Old Computers, Triumph-Adler was the merger company of the 2 typewriter manufacturers which later merged with yet another American typewriter company named Royal. The company produced a few computers with limited success and the Alphatronic was apparently their play into the home computer market. According to what I read it mostly sold in Europe (you can sometimes find some Alphatronics for sale on eBay Germany) but it was actually manufactured in Japan.
I picked up this machine and its original amber mono monitor for a bargain. I was really expecting a non-working computer but amazingly everything worked perfectly! I just had to clean it (quite a bit) and at the end the computer and monitor are in excellent shape. Basic loads from ROM and as you can see it works just fine:
The one part missing on this setup is the disk drive. The computer does have a cassette output connector but the pinout is not compatible with any cable I have. Info about this computer is extremelly scarce so if you have any please let me know!
Technical Specs:
| NAME | ALPHATRONIC PC |
| MANUFACTURER | Royal / Triumph-Adler |
| TYPE | Home Computer |
| ORIGIN | Japan |
| YEAR | 1983 |
| BUILT IN LANGUAGE | Microsoft Basic v.5.11 |
| KEYBOARD | Full-stroke keyboard, 6 function keys, arrow keys and separated numeric keypad, 85 keys |
| CPU | Zilog Z80 |
| SPEED | 4 MHz |
| RAM | 64 KB |
| ROM | 32 KB |
| TEXT MODES | 40 or 80 x 24 lines |
| GRAPHIC MODES | 80 x 72 / 160 x 72 with 8 colours |
| I/O PORTS | RGB video out, Tape interface, Serial RS232c/V24 port (from 300 to 9600 baud), Centronics/Parallel port, Disk-drive connector, Cartridge/Rompack slot, Mono composite |
| POWER SUPPLY | Built-in power supply unit |
| PERIPHERALS | Cassette, 5”1/4 disk-drives, printers (DRH 80/1 and TRD-170) |
Vintage CPU 
Great post! These were the machines we used in computer class at Yarmouk University Model School in Irbid, Jordan (GE: 32°31’59.74″N 35°51’17.73″E), where I went to prep and high school ca. 1984. The displays weren’t amber, though; they were white on black. IIRC, the versions we used had 16kb ROM, if there was ever such a version, and only the teacher’s machine had 32kb. Then the school set up a new, bigger lab after a third floor was added to the building ca. 1985, and the old TAs were all replaced with NSX-based Sakhr machines that were assembled in Kuwait!
Sorry about the typo… that is, MSX.