| HP codename, series |
Erni, Pioneer |
| Type, Precision, Input Mode |
Scientific, 12 BCD digits, exponent ±499, Algebraic |
| Programmable |
Yes, keystrokes, symbolic labels 0-9, A-Z. |
| Performance Index |
23 |
| Memory |
10 data registers, 99 program steps, permanent memory
|
| Display |
12 digit 7-segment LCD plus sign |
| Special features |
Root finder, numerical integration, complex numbers, 3x3 matrices, quadratic equations, curve fitting.
|
| Original Pricing, Production |
3.1.1989 ($49.95) - now (2002, approx. 40€) |
| Batteries |
3x small button sized cells |
| Dimensions |
Length 14.7cm, Width 7.8cm, Height 1.5cm |
| Links |
Scientific Calculator Owner's Manual HP-20S (PDF, English, 133 pages, edition 6, November 1994, printed in Singapore, 11/94)
Scientific Calculator Benutzerhandbuch HP-20S (PDF, German, 137 pages, 1. Ausgabe, Mai 1988, printed in Germany 11/92)
|
| Comment |
The HP-20S is apparently very similar to the HP-21S but offers a more
general set of features (ie. hex, oct, bin number bases) whereas the
HP-21S is specifically geared towards statistics applications. |
