Yeah, that's what the "exam mode" is about: to lock down access to the calculator memory, and advanced funtionality like CAS. From what I read, it: - Disables

Yeah, that's what the "exam mode" is about: to lock down access to the calculator memory, and advanced funtionality like CAS. From what I read, it: - Disables memory access or erases it - Disables data transmission - Lights an indicator - Can't be disable without physically connecting another calculator or computer. I think some even beep. Well, of course back then I did an extensive job of using the built-in memory for my "cheat sheets", even building programs with submenus for quick access, and some automated functionality. I don't feel like it really hindered me later. At least, it taught me more about programming :)