Enterprex BJ-21
The Enterprex BJ-21 is an arithmetic calculator with 10 digits precision and algebraic logic. It has 6 functions, 20 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAAA batteries. Note: Similar to Radio Shack EC-21 ; game
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 6 |
| Keys | 20 |
| Precision | 10 |
| Logic | Algebraic |
| Display type | VFD |
| Length | 140mm |
| Width | 76mm |
| Power Source | 3xAAA batteries |
| Year introduced | 1975 |
Replacements:
If you have an Enterprex BJ-21 that is no longer working, you can first try replacing the 3xAAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.
We suggest the following current models as possible replacements: