TI-Basic Z80 Programming/Catalog
Catalog Basics edit
The Catalog is a feature that some TI calculators have. It contains most of the commands that can be executed on the calculator. The Catalog can be accessed on some calculators (namely the TI-84 family, TI-83 family, and some others) by pressing 2ND:CATALOG(0). On other calculators, other button combinations may be used.
The Catalog is sorted alphabetically, and upon entering the Catalog, the cursor style is automatically set to ALPHA for easy searching. You can jump to a letter in the catalog by pressing that letter. Should no commands beginning with that letter exist, the Catalog will automatically take you to the next letter. Operands such as +, -, /, *, ', ", :, and π are stored at the end of the Catalog. Press CLEAR at any time to exit the Catalog.
Once you find the command you wanted to insert, you can insert it by pressing ENTER, and it will insert the content into the program editor or home screen.
The Catalog edit
abs(value)
Returns the absolute value of value.
valueA and valueB
Returns true only if valueA and valueB are both true or non-zero.
angle(value)
Returns the polar angle of a complex number or list of complex numbers.
Using Catalog Help (TI-83/TI-84 Families Only) edit
TI-83/84 families of calculators have an app called Catalog Help (CtlgHelp). While it says that it works only on the TI-83 family, it also works on the TI-84 family. Start the app by going to the apps menu (APPS), then running the CtlgHelp app. Keep pressing ENTER until you reach the Home Screen again. The next time you open the Catalog, press + with the cursor on an entry, and the command's syntax and usage will be displayed. You can use the up and down arrow keys to navigate to other commands in the Catalog. Press TRACE and the command will be inserted into the Program Editor or Home Screen, the same way you would insert it from the Catalog itself. Press GRAPH at any time to exit the Catalog Help environment.
Previous: Appendix A: List of Commands