Texas Instruments TI-84 Plus Guide Book

Appendix B: Reference Information 655
VARIABLE You have tried to archive a variable that cannot be
archived or you have tried to unarchive an application
or group.
Examples of variables that cannot be archived include:
• Real numbers LRESID, R, T, X, Y, Theta, Statistic
variables under
Vars, STATISTICS menu, Yvars,
and the
AppIdList.
VERSION You have attempted to receive an incompatible variable
version from another graphing calculator.
WINDOW
RANGE
A problem exists with the window variables.
• You defined Xmax  Xmin or Ymax  Ymin.
• You defined
qmax qmin and qstep > 0 (or vice
versa).
• You attempted to define
Tstep=0.
• You defined
Tmax  Tmin and Tstep > 0 (or vice
versa).
• Window variables are too small or too large to graph
correctly. You may have attempted to zoom in or zoom
out to a point that exceeds the TI-84 Plus’s numerical
range.
ZOOM • A point or a line, instead of a box, is defined in ZBox.
•A ZOOM operation returned a math error.
Error Type Possible Causes and Suggested Remedies

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-