HP F2216A hp 33s_user's manual_English_E_HDPM20PIE56.pdf - Page 39
Displaying Fractions, Messages
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Displaying Fractions Press { to switch between Fraction-display mode and the current decimal display mode. Keys: Display: Description: 12 3 8 { + Displays characters as you key them in. Terminates digit entry; displays the number in the current display format. Displays the number as a fraction. Now add 3/4 to the number in the X-register (12 3/8): Keys: Display: Description: 3 4 { ) Displays characters as you key them in. Adds the numbers in the X- and Y-registers; displays the result as a fraction. Switches to current decimal display format. Refer to chapter 5, "Fractions," for more information about using fractions. Messages The calculator responds to certain conditions or keystrokes by displaying a message. The ¤ symbol comes on to call your attention to the message. To clear a message, press or b. To clear a message and perform another function, press any other key. If no message appears but ¤ does, you have pressed an inactive key (a key that has no meaning in the current situation, such as in Binary mode). All displayed messages are explained in appendix F, "Messages". Getting Started 1-23