Texas Instruments TI-80 User Manual - Page 15
First Steps - screen contrast
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First Steps Before beginning the two sample problems, follow the steps on this page to reset the TI-80 to its factory settings. (Resetting the TI-80 erases all previously entered data.) This ensures that following the keystrokes in this section produces the same actions. 1. Press ´ to turn the calculator on. x If the screen is very dark or blank, adjust the display E contrast. Press and release 2, and then press and hold 8 (to make the display lighter) or press and hold 7 (to make the display darker). You can press M to clear the display. 2. Press and release 2, and then press µ. (Pressing 2 gives you access to the 2nd operations, which are printed at the upper left of the keys. MEM is the 2nd operation of the µ key.) The MEMORY menu is displayed. 3. Press 3 to select RESET... from the MEMORY menu. The MEMORY RESET menu is displayed. 4. Press 2 to select RESET from the MEMORY RESET menu. The calculator is reset, and the MEM CLEARED message is displayed. Getting Started 3