HP 33s hp 33s_user's manual_English_E_HDPM20PIE56.pdf - Page 40

Calculator Memory The HP 33s has 31KB of memory in which you can store any combination of data (variables, equations, or program lines). Checking Available Memory Pressing { Y displays the following menu: 8  Where 8 is the number of bytes of memory available. Pressing the {#} menu key displays the catalog of variables (see "Reviewing Variables in the VAR Catalog" in chapter 3). Pressing the {} menu key displays the catalog of programs. 1. To enter the catalog of variables, press {#}; to enter the catalog of programs, press {}. 2. To review the catalogs, press š or ™. 3. To delete a variable or a program, press { c while viewing it in its catalog. 4. To exit the catalog, press ‡. Clearing All of Memory Clearing all of memory erases all numbers, equations, and programs you've stored. It does not affect mode and format settings. (To clear settings as well as data, see "Clearing Memory" in appendix B.) To clear all of memory: 1. Press { c {}. You will then see the confirmation prompt  which safeguards against the unintentional clearing of memory. 2. Press {&} (yes). 1-24 Getting Started