Pocket Computer Universal Interface (PCUI) and the Casio FP-40 Printer

After a few years of searching and finding a Casio FP-40 printer and two interface packs, I was finally able to test out the various features of this printer. Not only does this printer connect directly to the Casio PB-100 series, FX-7xx series of pocket computers, it also connects to not only the PB-700/770 series but with the SB-43 interface pack, any pocket computer with a parallel port. Lastly, I can use the Pocket Computer Universal Interface (PCUI) to interface the Casio FP-40 to all of my pocket computers, including TI graphing calculators. Further, graphics support for the FP-40 was added to the PCUI, for printing plots and screen captures. Purchase a fully assembled PCUI or a kit: https://www.tindie.com/products/n1ugk... GitHub: https://github.com/N1UGK/PCUI_Public Owners guide, assembly instructions, BOM, Schematics, PCB layouts, Pocket Computer programs, and PCUI firmware updates are all in the GitHub repo. My blog post on the progress from the beginning: https://n1ugk.com/2025/12/pocket-comp... Check out the CE-158x here, for the PC-2/PC-1500:    • Sharp CE-158X ‘EXTREME’. Long-term project...