HP 40gs HP 39gs_40gs_Mastering The Graphing Calculator_English_E_F2224-90010.p - Page 32

The GRAPHICS MANAGER There are two views, shown right, for which the only access is via the MEMORY MANAGER screen. The first of these, the GRAPHICS MANAGER, shows some memory in use on my calculator due to the screen captures I am performing to show you these views. Yours will probably be empty. If you have loaded an aplet from the internet then it may have used a GROB (Graphics Object) to store an image as part of its working. The LIBRARY MANAGER The second view is the LIBRARY MANAGER, and this will almost certainly be empty unless you have games loaded. Generally, the only aplets which use libraries are those such as games which are written by expert programmers in machine code in order to make them run as fast as possible. These games, available on the internet, are listed in the APLET view along with the normal aplets and when you delete them the associated library is automatically deleted with them, unlike the case of the 'helper' programs. Calculator Tip 1. Because of the amount of memory available on the hp 39gs & hp 40gs, the Memory View is not one that you will normally need to worry about unless you store a truly amazing number of Notes. It is probably of more interest to programmers. 2. As discussed later, most games currently available for the hp 39gs and hp 40gs were originally written for the hp 39g. This can cause problems in two respects: • The hp 39g was a much slower calculator and the games may simply run too fast to be playable. • Some games were written using programming commands specifically aimed at the hp 39g chip. When these commands execute on an hp 39gs or hp 40gs they may cause the calculator to lock up and/or lose user memory. They should not, however, cause permanent damage. 32