Owner's manual
Table Of Contents
- Material covered
- The HP 49G documentation set
- Chapter 1
- Entering commands
- Keyboard entry
- Subject-specific menus
- Displaying system Flags
- Setting and clearing Flags
- User Flags
- Chapter 3
- Command line operations
- Activating the command line
- Positioning the cursor
- Helpful commands and sub-menus
- Selecting characters
- Copy, cut, and paste
- Editing the command Line
- Command Line information
- Chapter 4
- Using the stack
- Example stack calculations
- Chapter 5
- Matrices and linear algebra
- Matrix Writer operations
- Advanced matrix operations
- Creating special matrices
- Assembling matrices
- To assemble a matrix by rows From a series of vectors
- To assemble a matrix by columns From a series of vectors
- To assemble a matrix with a particular diagonal From a vector
- To assemble a matrix From a sequence oF elements
- To disassemble a matrix into its elements
- To disassemble a matrix into row vectors
- To disassemble a matrix into column vectors
- To extract the vector oF diagonals From a matrix
- To insert one or more new rows into a matrix
- To insert one or more new columns into an array
- To extract a particular row From an array
- To extract a particular column From an array
- Swapping rows and columns
- Extracting and replacing elements oF matrices
- More matrix arithmetic
- To change the sign of each element in a matrix
- To multiply a matrix and vector
- To divide an array by a square matrix
- To combine two real matrices into a complex matrix
- To split a complex matrix into two real matrices
- To conjugate each element of a complex matrix
- To extract the matrix of real parts from a complex matrix
- To extract the matrix of imaginary parts From a complex matrix
- Eigenvalues and eigenvectors
- To compute the eigenvalues For a square matrix
- To compute the eigenvalues and eigenvectors For a square matrix
- To compute the singular values oF a matrix
- To decompose or factor a matrix
- Overview of the Units application
- Unit objects
- Converting units
- Calculating with units
- Working with temperature units
- Chapter 7 Constants Library
- To view the constants library
- To copy a constant to the stack or history
- To include a constant in an algebraic expression
- Chapter 8 Number bases
- Entering and displaying binary integers
- To set the base
- To set the wordsize
- To recall the current wordsize
- To enter a binary integer
- To add, subtract, multiply, or divide two binary integers
- To find the negative of a binary integer
- To convert a binary integer to a diFFerent number base
- To convert a binary integer to a real number
- To convert a real number to a binary integer
- Using Boolean operators
- Manipulating bits and bytes
- List Processing
- Applying a Function or program to a List
- List Manipulations
- Chapter 10
- Advanced plotting options Labelling and relocating the axes
- Plotting programs
- Plotting range vs. display range
- To check the current size oF PICT
- To use computed values for plotting or display ranges
- Saving and Restoring Plots
- Chapter 11
- How memory is structured
- Accessing port contents
- Backup objects
- Using data in backup objects
- How the HP 49G manages memory
- To list a port’s contents, and find Free memory
- Chapter 12
- Date and time arithmetic Date and time Formats
- Date and time tools
- Calculating with dates
- Calculating with times
- Chapter 13 Customization
- Creating menus
- User mode
- Chapter 14
- Computer Algebra Commands
- Alphabetical command list
- 1 q
- Index
Unlike the HOME directory, port memory cannot be subdivided into
directories. A port can only contain two types of objects:
® backup objects
® library objects.
Accessing port contents
In order to access the contents of the variables stored in the ports you can
use File Manager. For details on how to use File Manager, refer to the
User’s Guide.
Alternatively, you can access the contents of libraries and ports, by
pressing 0(DB). a fmiction key menu of the attached libraries and the
available ports is displayed.
® To view the contents of a port, press the function key that corresponds
to the port. The contents are displayed as a function key menu.
® To access the fimctions in an attached library, press the function key
that con'esponds to the library. The functions it contains are displayed
as a function key menu. To nm a function, press the function key that
corresponds to the function.
Backup objects
You generally use backup objects to save data that you want to keep for a
long time. Backup objects are special copies of objects from your HOME
directory. Note the following points regarding backup objects:
* Backup objects can only exist in port memory.
® You cannot modify the contents of a backup object.
® You can store either a single calculator object as a backup object or an
entire directory. You cairnot create a backup object for selected
objects in a directory.
The HP 49G monitors the integrity of backup objects. Wlren you create a
backup object in a port, the HP 49G calculates a CRC value (cyclic
redimdancy check) based on the binary data that the object contains. A
CRC value is a checksum calculated from the data. This value is stored
with the object.
When you restore a backup object, the calculator re-calculates the CRC
value and compares it to the original value. If the CRC values are not the
same, the calculator warns you that the data is corrupt.
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Memory