Texas Instruments TI-89 Manual Book page 470

getFold()
CATALOG
getFold()
nameString
Returns the name of the current folder as a
string.
getKey()
CATALOG
getKey()
integer
Returns the key code of the key pressed.
Returns 0 if no key is pressed.
The prefix keys (shift ¤, second function
2, option ¥, alpha j, and drag ‚) are
not recognized by themselves; however, they
modify the keycodes of the key that follows
them. For example: ¥ Ù ƒ Ù ƒ 2 Ù.
For a listing of key codes, see Appendix B.
getMode ()
CATALOG
getMode(modeNameString)
getMode("ALL")
If the argument is a specific mode name,
returns a string containing the current setting
for that mode.
If the argument is
string pairs containing the settings of all the
modes. If you want to restore the mode
settings later, you must store the
getMode("ALL")
use
setMode()
For a listing of mode names and possible
settings, see
Note: To set or return information about the
Unit System
instead of
getNum()
MATH/Algebra/Extract menu
getNum(expression1)
Transforms
reduced common denominator, and then
returns its numerator.
string
ListStringPairs
"ALL" , returns a list of
result in a variable, and then
to restore the modes.
setMode() .
mode, use or
setUnits()
or .
setMode() getMode()
expression
into one having a
expression1
getFold() ¸
getFold()! oldfoldr ¸
oldfoldr ¸
Program listing:
:Disp
:Loop
: getKey()! key
: while key=0
: getKey()! key
: EndWhile
: Disp key
: If key = ord("a")
: Stop
:EndLoop
getMode("angle") ¸
getMode("graph") ¸ "FUNCTION"
getMode("all") ¸
"Display Digits" "FLOAT 6"
"Exponential Format" "NORMAL"
"Vector Format" "RECTANGULAR"
"Split Screen Ratio"
getUnits()
Note: Your screen may display different
mode settings.
getNum((x+2)/(yì 3)) ¸
getNum(2/7) ¸
getNum(1/x+1/y) ¸
Appendix A: Functions and Instructions
"main"
"main"
"main"
"RADIAN"
{"Graph" "FUNCTION"
"Angle" "RADIAN"
"Complex Format" "REAL"
"Pretty Print" "ON"
"Split Screen" "FULL"
"Split 1 App" "Home"
"Split 2 App" "Graph"
"Number of Graphs" "1"
"Graph 2" "FUNCTION"
"1,1"
"Exact/Approx" "AUTO"
"Base" "DEC"}
x + 2
x + y
2
453