Folks: I have several extra modules for an HP-9825 calculator/computer: Operating System, No. 09825-67905 Long module, slides in the side. (two available) String -- Adv. Programming, No. 98210A. Short module, slides in the front. (two available) 9872A Plotter -- Gen I/O and Extended I/O. Short module, slides in the front. (one available) Make me an offer. Offer ends on June 30th at noon EDT. Jon Jon Titus 36 Sunset Drive Milford, MA 01757-1362 USA Phone: +1-508-478-8040 E-mail: jontitus(a)attbi.com