Main Memory Data Types; Main Memory Folders - Casio fx-CP400 User Manual

Main Memory Data Types

Data stored in main memory has a data type attribute that is assigned in accordance with the application that
created the data and the actual content of the data. The data type is indicated by a data type name. Data type
names are shown on the Variable Manager variable list, and on the Select Data dialog box that appears when
you are specifying a variable in any ClassPad application. The following table lists all of the data type names
and explains the meaning of each.
Data Type Name
EXPR
STR
LIST
MAT
PRGM*
EXE*
TEXT*
FUNC*
GMEM*
GEO*
MEM*
OTHR
Protected variable types
Some data types are protected. A variable whose data type is protected cannot be overwritten with another
variable, which protects variable contents from being inadvertently altered. Data types whose names are
marked with an asterisk in the above table are protected. Note that whether or not a data type is protected is
determined by the system. You cannot change the protection status of a data type.
Tip:
Even when a variable is a protected data type, you can rename, delete, or move it. To disable these operations, you
need to lock the variable. See "Variable Manager operations" on page 27.

Main Memory Folders

Your ClassPad stores data in one of the following types of folders described below.
"main" folder: The "main" folder is a ClassPad reserved folder, and acts as the default current folder (see
"Current Folder" below).
"library" folder: Also a ClassPad reserved folder, the "library" folder can be used for storing user-created data
(variables, programs, user functions, etc.). Data stored in the "library" folder can be accessed without specifying
a path, regardless of the current folder setting.
User folder: This is a folder created and named by you. You can make a user folder the current folder, move
data to a user folder, etc. You can also delete and rename a user folder as required. You can have up to 87
user folders in main memory at one time.
Tip:
You cannot put a folder inside of another folder.
Current Folder
The current folder is the folder where the data (excluding eActivity files) created by applications are stored
and from which such data can be accessed. The initial default current folder is the "main" folder. You can also
select a user folder you created as the current folder. For more information about how to do this, see "Variable
Manager operations" on page 27.
Data Type
Real number, complex number or expression data
String data
List data created using the Statistics application, Main application, etc.
Matrix data created using the Main application, etc.
General program
Edit prohibited program
Text data
User-defined function
Graph memory data saved using the Graph & Table application
For more information, see "Saving Graph Editor Data to Graph Memory" (page 100).
Geometry application data
Data saved to a file using one of the following applications: Spreadsheet, Geometry,
Verify (page 92), Probability (page 92).
Data other than that described above
Chapter 1: Basics 26