Operation Manual
Chapter 1: Getting Started with the TI-84 Plus C Silver Edition 22
Notes about Variables
• You can create as many list names as memory will allow (Chapter 11 in the guidebook).
• Programs have user-defined names and share memory with variables (Chapter 16 in the
guidebook).
• From the home screen or from a program, you can store to matrices (Chapter 10), lists (Chapter 11),
strings (Chapter 15), system variables such as Xmax (Chapter 1), TblStart (Chapter 7), and all Y=
functions (Chapters 3, 4, 5, and 6 in the guidebook).
• From an editor, you can store to matrices, lists, and Y= functions (Chapter 3 in the guidebook).
• From the home screen, a program, or an editor, you can store a value to a matrix element or a list
element.
• You can use
DRAW STO menu items to store and recall Pic Vars (Chapter 8 in the guidebook).
• Although most variables can be archived, system variables including r, T, X, Y, and q cannot be
archived (Chapter 18 in the guidebook).
• Apps are independent applications, which are stored in Flash archive. AppVars is a variable holder
used to store variables created by independent applications. You cannot edit or change variables in
AppVars unless you do so through the application which created them.
Storing Variable Values
Storing Values in a Variable
Values are stored to and recalled from memory using variable names. When an expression containing
the name of a variable is evaluated, the value of the variable at that time is used.
To store a value to a variable from the home screen or a program using the ¿ key, begin on a blank
line and follow these steps.
1. Enter the value you want to store. The value can be an expression.
2. Press ¿. ! is copied to the cursor location.
3. Press ƒ and then the letter of the variable to which you want to store the value.
4. Press Í. If you entered an expression, it is evaluated. The value is stored to the variable.
Displaying a Variable Value
To display the value of a variable, enter the name on a blank line on the home screen, and then press
Í.
Background images
Image1, Image2, ... , Image9, Image0
Pictures Pic1, Pic2, ... , Pic9, Pic0
Strings Str1, Str2, ... , Str9, Str0
Apps Applications
AppVars Application variables
Groups Grouped variables
System variables
Xmin, Xmax, and others
Variable Type Names