Radio Shack/Tandy EC-4031

From: Russell
Email: russell.crichton@student.curtin.edu.au


Desparately need a manual for old faithful. Its an EC-4031 badged as Tandy or RadioShack (depending on your country). Need to know how to use the "n" or sum of X button (statistics). So even if you dont have a manual but know how to do this please let me know.