HP 113394 User Guide - Page 113

Section 8: Programming Basics 113 To determine at any time how many program lines (including those containing gi000) are currently in program memory, press gN (memory). The calculator will respond with a display like the following: If you find yourself creating long programs, you should create your programs so that they don't use up program lines unnecessarily, since program memory is limited to 400 program lines. One way to minimize program length is to replace numbers consisting of more than just one digit - like the number 25 in lines 002 and 003 of the program keyed in above - by a : instruction, and then storing the number in the designated storage register before running the program. In this case, this would save one program line, since the : instruction requires only one program line, not two as are required by the number 25. Of course, doing so uses up data storage registers that you might want to save for other data. As in many business and financial decisions, there is a trade off involved; here it is between program lines and data storage registers. File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 113 of 275 Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm