HP HP12C hp 12c_user's guide_English_E_HDPMBF12E44.pdf - Page 88
Programming Basics
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Section 8 Programming Basics Why Use Programs? A program is simply a sequence of keystrokes that is stored in the calculator. Whenever you have to calculate with the same sequence of keystrokes several times, you can save a great deal of time by incorporating these keystrokes in a program. Instead of pressing all the keys each time, you press just one key to start the program: the calculator does the rest automatically! Creating a Program Creating a program consists simply of writing the program, then storing it: 1. Write down the sequence of keystrokes that you would use to calculate the quantity or quantities desired. 2. Press fs to set the calculator to Program mode. When the calculator is in Program mode, functions are not executed when they are keyed in, but instead are stored inside the calculator. The PRGM status indicator in the display is lit when the calculator is in Program mode. 3. Press fCLEARÎ to erase any previous programs that may be stored inside the calculator. If you want to create a new program without erasing a program already stored, skip this step and proceed as described in Section 11, Multiple Programs. 4. Key in the sequence of keystrokes that you wrote down in step 1. Skip the beginning keystrokes that enter data, which would differ each time the program is used. Example: Your office supplies dealer is selling selected stock at 25% off. Create a program that calculates the net cost of an item after the discount is subtracted and the $5 handling charge is added. First, we'll manually calculate the net cost of an item listing for $200. Keystrokes Display 200 \ 25b 200. 200.00 50.00 Keys in cost of item. Separates cost of item from percentage to be keyed in next. Amount of discount. 88 File name: hp 12c_user's guide_English_HDPMBF12E44 Printered Date: 2005/7/29 Page: 88 of 209 Dimension: 14.8 cm x 21 cm