Texas Instruments TI-89 Titanium Short User Manual

Appendix A: Functions and Instructions 149
Name of the function or instruction.
Key or menu for entering the name.
You can also type the name.
Syntax line shows the order and the type of
arguments that you supply. Be sure to separate
multiple arguments with a comma (,).
Appendix A:
Functions and Instructions
Quick-Find Locator ......................................................................................... 150
Alphabetical Listing of Operations ................................................................. 154
This section describes the syntax and action of each TI-89 Titanium/ Voyage™ 200 function and instruction
that is included in the operating system (OS). See modules relating to calculator software applications (Apps)
for functions and instructions specific to those Apps.
Circle CATALOG
Circle x , y , r [, drawMode ]
Draws a circle with its center at window
coordinates (
x , y ) and with a radius of r .
x , y , and r must be real values.
If
drawMode = 1, draws the circle (default).
If
drawMode = 0, turns off the circle.
If
drawMode = -1, inverts pixels along the circle.
Note: Regraphing erases all drawn items.
In a ZoomSqr viewing window:
ZoomSqr:Circle 1,2,3 ¸
Arguments are shown in italics.
Arguments in [ ] brackets are
optional. Do not type the brackets.
Example
Explanation of the function or
instruction.
A

Texas Instruments TI-89 Titanium Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
CPU	Motorola 68000
CPU Speed	16 MHz
RAM	256 KB
Flash ROM	2.7 MB
Programming Language	TI-BASIC, Assembly
Power Source	4 AAA batteries
Connectivity	I/O port
Dimensions	7.5 x 3.5 x 1 inches