S.U.P.E.R. HP 200LX Archive
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Matrix Calculator

Version 1. · John Kennedy

Download 154.2 KB

Description

The HP Palmtop Paper MATRIX - a program that teaches row operations with matrices. Features include fraction mode, decimal mode, solves linear systems, inverses, determinants, sets of basis vectors, eigenvectors and eigenvalues, Gram-Schmidt orthogonalization, and the simplex algorithm.

Technical details

File
jkmatrix.zip
Size
154.2 KB
Format
.zip
Year
1994
Added to S.U.P.E.R.
1999-10-26
Files inside
4
Author
John Kennedy
Path
anonftp/pub/jkmatrix.zip

How to install it

What to send to the palmtop saves 170.7 KB

These are the files you need. You can send them from the package contents below.

  • MATRIX.EXE → A:\SOFT programa de DOS 242.2 KB

No need to put MATRIX.HLP, MATRIX.TXT, MATRIX.ICO: they are manuals, source code or supporting material. Read them here and save 170.7 KB on a 1 MB disk.

Steps
  1. Copy MATRIX.EXE to A:\SOFT. They are DOS programs: run them from the DOS icon, or add A:\SOFT to the PATH in C:\AUTOEXEC.BAT to call them by name.

Derived from the package contents and the 200LX conventions. It installs to A: on purpose: C: is a RAM disk and every byte there is memory taken from the system.

The author's instructions
GETTING STARTED

To begin running the MATRIX program type the command:

                          <M> <A> <T> <R> <I> <X> <ENTER>


When the matrix program first starts it loads a 3x3 matrix in a window, in
which each element is a 0.

The entire screen can be considered to be divided into three distinct sections.
The very top line on the screen is what is called the Menu Bar.  The very
last line is called the Status Line.  The area of the screen between the Menu
Bar and the Status Line is called the Desktop, and it is within the Desktop
that your matrices will be displayed.  Each matrix is displayed in a separate
window that is surrounded by a border or what will be called the window frame.
Initially there is only one large window whose frame is a thick double line.


THE MAIN MENU BAR AND SELECTING SUBMENU ITEMS

Commands are always selected from items on the Menu Bar.  If you have a mouse
then you exercise each pull-down menu by clicking or selecting the text of the
menu titles.  If you do not have mouse you can use the <Alt> key together with
the highlighted letter of each menu item.  For example, pressing  Alt+F  will
cause the File menu item to display its list of contents.  Pressing  Alt+M
will show the items under the Modify menu.

To further select an item under any menu (what is called a submenu item), use
the down arrow or up arrow keys to move the highlighting to the item you wish
to select and then press the <ENTER> key to execute the corresponding command.
A sometimes faster alternative to using the arrow keys is to press the
highlighted letter of the menu item you wish to select.  Each menu item has
one of its letters highlighted.  For example, under the Modify menu the
Redimension command is associated with the letter R.  So pressing Alt+M and
…

Literal excerpt from MATRIX.TXT, exactly as it came in the package.

Send to my palmtop

The palmtop must be waiting before you press the button, or the transfer will fail. It is the palmtop that announces it is ready, not the other way round.

First time? How to connect the palmtop, step by step →