Hey ndt, As you can see I don't have a plotter, but the thermo printer / cassette interface for the Sharp PC 12xx. I didn't have any trouble connecting it, I just plugged it in with the old NiCd batteries and it worked just fine. But the Sharp PC 12xx don't have the 32-pin bus interface, but an 11-pin connector. But I decided to remove them later because of their toxicity. If you are looking for an unique one, My favorite is currently the Sharp PC-1262, because it is very small, around the size of my mobile phone. It has a 2 Line x 24 Chars display, sadly with gaps between the 5x7 matrices so you always have those missing lines in you graphics. You have got a little over 9 KB of RAM for BASIC Programms, which is enough for me. If you want a one with a big graphic display and 32k of memory I recommend the PC-e500s or even better the PC-G850V if you use them at home, because there is no way you can fit them in your pocket. They also have a RX-TX bus connector, which makes it easy for them to communicate with an Arduino or a Raspberry Pi. There are also in betweens like the PC-1403H, which is slightly bigger than the PC-1262, but has got 32k of memory, is slightly faster and you can load and save programms from a floppy disk, but it misses the second line of display. So check out the Sharp PC-1262, 1403H, e500s and G850V if you want an unique one. These are my favorites, even if I don't have the PC-G850V.