Built-In Program Library - HP -20S Owner's Manual

Built-in Program Library
Your HP-20S has six built-in programs that can be copied
into program memory using (9] [LOAD]. To load a pro-
gram, press (9] [PRGM], then (1] followed by A
through F. An abbreviation of the program name is dis-
played for a moment, then the program pointer is set to
line 00. The built-in programs are:
Program Title Message
Name
A Root Finder root
B Numerical Integration int
C Complex Operations CPL
D 3 x 3 Matrix Operations 3 bY 3
E Quadratic Equation qUAd
F Curve Fitting Fit
The built-in programs are designed to save keystrokes when entering
a program. These programs can be edited and run just like programs
that you entered yourself. When a new program is loaded, it clears
any other programs that may be in memory. This chapter gives in-
structions and an example for each program in the library.
88 7: Built-in Program Library