PCX-Belgium, initially PCX standing for Pocket Calculator eXchange, was created back in the early 80’s as a user group for Hewlett Packard calculator lovers. Over time we evolved to calculator lovers as we also looked to other brands and calculation technologies. We even had a close cooperation with the Texas Instruments Calculator Group in Belgium. However, RPN (Reverse Polish Notation) remains our most favourite topic until today mainly supported by HP calculators. As calculators are also fading away we evolved the last years more and more into science and mathematics followers where we on club level try to exchange and explain the latest moves in these areas. Next to that we solve science and mathematical riddles, showcase our latest (2nd hand) purchases and have some social talking when we see each other on one of our events where everybody is welcome, also if your not a member. See higher for the next planned event. The main language on the events is Dutch unless we do have English or French guest.