Preface This introduction to programming HP graphics calculators assumes the reader is already familiar with the basic operation of the calculator; it deals only with programming techniques. The Web site HP 50g Calculator Tutorial http://www.thiel.edu/MathProject/CalculatorLessons/Default.htm provides an introduction to the basic operation to the three models mentioned below. These instructions are based on the HP 49G+, but much of what is included here applies to many other models. In particular, virtually everything here applies to the HP 48GII and the HP 50g, which are almost identical to the 49G+. The only differences are that the memory capacity of the 48 is much smaller and the shift keys on both are different colors. This introduction deals primarily with the programming techniques that will be needed by students in the Numerical Analysis course at Thiel College. There is much more to be learned by reading chapters 21 and 22 of HP 49G+ Graphing Calculator User's Guide. This publication comes on a CD with the calculator. This guide will be referred to as UG in what follows.The HP 49G+ has three shift keys, the yellow ALPHA shift, the green left shift and the red right shift. In the examples in this text these shift keys will be abbreviated AS, LS, and RS respectively. The four arrow keys; up arrow, down arrow, left arrow, and right arrow; will be abbreviated UA, DA, LA, and RA respectively. In some cases, especially with the calculator in RPN mode, a shift key must be held down while another key is pressed. In such cases the command will be written as LS(hold). Finally, menu commands will be preceded by the appropriate soft key, F1, F2, ..., F6. For example, if the calculator is in algebraic mode, the following steps will put it into RPN mode: MODE F2-CHOOS DA F6-OK F6-0K. As another example, let us set the calculator to show soft menus. Press MODE, then F1-FLAGS then UA 7 times to highlight system flag 117. If this flag is not checked, press F3-CHK. The flag should now show "Soft MENU." Now press F6-OK twice. For all of the examples in this text it is assumed that the calculator is set for RPN and soft menus. The author wishes to thank Sara Franco Newton, Cassandra Beck('09), Angela Crone('09), Klotilda Lazaj('04), Nicholas Lias('04), Kara McDowell('01), Amanda McKeehan('04), Andrew Murrin(post grad student), Anthony Ross('04), Michael Ryan('09), John Svirbly('06), Timothy Van Horn('09) Nicole Volchko('00), Sean Weaver('04), and Rebeccah Williams('04) for their help in proofreading this and previous editions of this work. Thanks also to Michelle Porada (Thiel class of 2000) for her help in preparing it for the WWW.
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