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Page D-1
Appendix D
Additional character set
While you can use any of the upper-case and lower-case English letter from the
keyboard, there are 255 characters usable in the calculator. Including special
characters like θ, λ, etc., that that can be used in algebraic expressions. To
access these characters we use the keystroke combination …± (associated
with the EVAL key). The result is the following screen:
By using the arrow keys, š™˜—, we can navigate through the
collection of characters. For example, moving downwards in the screen
produces more characters in the display:
Moving farther down, we see these characters:
There will be one character highlighted at all times. The lower line in the
display will show the short cut for the highlighted character, as well as the ASCII
character code (e.g., see the screen above: the short cut is αDα9, i.e.,
~„d~…9, and the code is 240). The display also shows three