Radio Shack EC-21 (Blackjack 21)
The Radio Shack EC-21 is an arithmetic calculator with 10 digits precision and algebraic logic. It has 6 functions, 23 keys, and an LCD (liquid crystal) display. Note: game
Facts at a glance:
If you have a Radio Shack EC-21 that is no longer working, you can consider replacing the calculator with a modern equivalent.
We suggest the following current models as possible replacements: