TABLE-85



Table is a program that does tables for the TI 85.  It will do rectangular

and polar coordinates and is very similar to the 82 table module.

----begin documentation----



Instructions for Table 1.10 Program

for the TI-85 Calculator



Section I       Legal Terms



This program is released under the GNU Public License, which basically says:



    1.)  You may distribute this program freely, but only for free.  



    2.)  You may change the program as you like, but you may not re-release it   

   

    without stating that it was changed.



    3.)  There is no warranty on this software.  It is strictly use at your 

    own risk.



For more information on the GNU Public License, see the Appendix.



Section II      Installation



You should have received the program in the form of two files, TABLE and 

TABLEDEF.  The TABLE program should be run under normal circumstances.  

TABLEDEF is the installation/defaults program.



To install Table 1.10, execute the TABLEDEF program.  It will set all the 

necessary variables for the program to run.  Basically, it sets equations 

y13 and r13 to 0, and adds a few of the variables that store the setup 

information for the program.  For this program to work, all of these variables 

must be present.  Therefore, if the program starts complaining that it cannot 

locate a variable, simply run TABLEDEF again and that should solve the 

problem.



After you run TABLEDEF, hit enter, and you will automatically launch the 

TABLE program.



Section III     The Main Menu



The main menu screen will display a line along the very top and a line along 

the very bottom.  The equation at the top is the current equation that will 

be graphed.  As of now, there is no way to change which equation it 

automatically loads without editing the program source.  Along the bottom is 

the list of options that you may select.  They are:



	Chart - This will display a chart of the current equation (Section V).



	Plug - Selecting this will allow you to plug a value in to the 

	equation.



	Edit - This allows you to enter a new function to chart (Section VI).



	Setup - This changes the settings of Table (Section IV).



	Quit - Pressing quit will leave the program.



You can select the option that you wish to choose by pressing the function 

keys along the top of the TI-85 keypad.



Section IV      Configuring Table 1.10



Selecting F4 from the main menu will take you to the three-part configuration 

menu of Table.  Each value has a number, and pressing the number on the 

keypad will allow you to manipulate its corresponding value.  Simply press 

the number, and the calculator will act (i.e. you do not need to press enter.)  

The options are:



	Mode - This function will allow you to choose what graphing mode you 

	wish to chart (rectangular or polar).  This setting will display Rect 

	for rectangular mode and Pol for polar graphing.  It physically 

	changes the setting found under the [MODE] button of the calculator, 

	so its display represents the setting for all functions in the 

	calculator.  This means that if you change it to polar mode and then 

	exit the program, you will still be in polar graph mode.  To change 

	the current mode from the setup screen, press 1 and it will toggle 

	the value between polar and rectangular.



	Start - This value is the starting position of the table.  When you 

	press 2, it asks you for a new starting position.  The starting 

	position will be the first value when you select F1 from the main 

	menu.  You may wish to change this value if you want to start at an 

	unusually high or low number, so you won't have to scroll through the 

	chart as much.  When you have entered a number, press enter, and you 

	will be returned to the setup screen.



	D Table - This value determines the 'distance' between values on the 

	chart.  For counting numbers (1, 2, 3, 4, 5) this value should be 1.  

	For angle measurements, this might be 15 (degrees) or p/6 (radians).  

	After entering a value, the enter key will return you to the setup 

	menu.  If you set this value to a negative number, the chart will 

	display from highest to lowest.



	Back - This function will return you to the main menu.



Section V       Charts



When you select chart, you will be given a chart, beginning with the value 

determined by the start variable in the setup, and incrementing by the 

D table variable.  The chart is divided in to two columns, f (or q) and 

f(x) (or r).  The program will detect which mode and display the appropriate 

variable at the top of the chart.  The chart displays 6 values at a time, 

and is separated by "I"s down the middle.



The numbers in the chart are fixed to three decimal places, and will 

automatically switch to scientific notation.  This is to avoid one side of 

the chart overlapping the other side.  If three decimals aren't sufficient, 

the source may be modified.  (Modifying the source, however, is beyond the 

scope of this document.)



The options in the chart section are as follows:



	Next - This option moves the chart down six spots by the increment 

	defined in the setup menu.



	Previous - This option moves the chart up six spots by the increment 

	defined in the setup menu.



	Start, D Tbl - These options correspond to the Start and D Table 

	options in the setup menu (Section IV).  They are provided as a 

	short cut. 



	Back - This will take you back to the main menu.



Section VI      Editing Equations from the Main Menu



While the y13 and r13 equations may be modified from the [GRAPH] selection, 

the ability to edit them in this program has been included for convenience.  

Equations aren't covered in this document, but there are special techniques 

that must be used when editing equations from Table 1.1.



	Rectangular Equations - Entering a rectangular equation is exactly 

	the same as it is in the normal equation editor, except that the 

	x-variable is not accessible from the function keys.  To use the 

	x variable, press the [x-VAR] button.  All other functions (tan, 

	log, etc.) work as usual.



	Polar Graphing - Entering a polar equation can be tricky, since 

	the theta key is not readily accessible.  To select the theta 

	variable, press the [2nd] key, then the 0 button, to access the 

	[CHAR] menu.  From there, choose GREEK, and then press [MORE] once.  

	The theta character is accessed by pressing the F2 button.  Once 

	again, all other functions work as usual for equation editing.



Section VII     Known Problems



The major problem with this table program is that the table will halt 

whenever an undefined value occurs.  There is no way to correct this problem, 

as it lies in the calculator itself; however, there are a few ways to work 

around it.



This simplest method is to simply avoid values that will cause the calculator 

to break (such as log 0, tan 90, 1/0, etc.) by manipulating the start and D 

table variables.



The other way for working around this is to add a small number to the initial 

value- a number small enough that it won't affect the value within the 

thousandth decimal place.  For example, 0.0 will cause the function 1/x 

to break out of the program, but 0.000001 will not, and it is small enough 

that it will not make a difference on the chart.



Appendix



This program was written in 1996 by Nicholas Fitzkee (York Suburban High

School, class of '97).  Email questions or comments to nfitzkee@blazenet.net.



The complete version of the GNU Public License may be viewed at

	http://www.webtools.org/counter/copying.html



----end documentation----

----begin ASCII----

\START\

\COMMENT=Program file dated 01/22/97, 15:31

\NAME=TABLE

\FILE=table.85P

 Lbl start

ClLCD

If \UC-Omega\gmode==0:Then:Outpt(1,1,"y13="):\Eq>St\(y13,\UC-Omega\eq):\#\

Outpt(1,5,\UC-Omega\eq):Func:Else:Outpt(1,1,"r13="):\Eq>St\(r13,\UC-Omega\\#\

eq):Outpt(1,5,\UC-Omega\eq):Pol:End

Menu(1,"Chart",chart,2,"Plug",plug,3,"Edit",edit,4,"Setup",setup,5,"Qui\#\

t",quit)

Lbl setup

ClLCD

Disp "1. Mode:"

If \UC-Omega\gmode==0:Then:Outpt(1,10,"Rect"):Else:Outpt(1,10,"Pol"):En\#\

d

Disp "2. Start:"

Outpt(2,11,\UC-Omega\ini)

Disp "3. \UC-Delta\ Tbl:"

Outpt(3,11,\UC-Omega\inc)

Disp "4. Back"

Outpt(8,1,"Selection?")

Lbl insetup

0\->\\UC-Omega\menu

While \UC-Omega\menu==0:getKy\->\\UC-Omega\menu:End

If \UC-Omega\menu==92:Then:If \UC-Omega\gmode==1:Then:0\->\\UC-Omega\gm\#\

ode:Else:1\->\\UC-Omega\gmode:End:Goto setup:End

If \UC-Omega\menu==93:Then:ClLCD:Disp "Enter new start:":Input ("Start:\#\

",\UC-Omega\ini):Goto setup:End

If \UC-Omega\menu==94:Then:ClLCD:Disp "Enter new inc:":Input "\UC-Delta\\#\

 Tbl:",\UC-Omega\inc:Goto setup:End

If \UC-Omega\menu==82:Then:Goto start:End

Goto insetup

Lbl edit

ClLCD

If \UC-Omega\gmode==0:Then:InpST "y13=",\UC-Omega\eq:\St>Eq\(\UC-Omega\\#\

eq,y13):Else:InpST "r13=",\UC-Omega\eq:\St>Eq\(\UC-Omega\eq,r13):End

Goto start

Lbl plug

ClLCD

If \UC-Omega\gmode==0:Then:Input "x=",\UC-Omega\sol:Disp "y=":evalF(y13\#\

,x,\UC-Omega\sol)\->\\UC-Omega\ans:Disp \UC-Omega\ans:Pause 

Else:Input "\LC-theta\=",\UC-Omega\sol:Disp 

"r=":evalF(r13,\LC-theta\,\UC-Omega\\#\

sol)\->\\UC-Omega\ans:Disp \UC-Omega\ans:Pause :End

Goto start

Lbl chart

\UC-Omega\ini\->\\UC-Omega\sol

Lbl dchart

ClLCD

If \UC-Omega\gmode==0:Then:Disp "    x     I   f(x)":Else:Disp "    \LC-theta\\#\

     I     r":End

For(\UC-Omega\,1,6)

If (fPart abs (\UC-Omega\sol)\>=\1\E\\(-)\12 and fPart abs (\UC-Omega\s\#\

ol)<.001) or (iPart abs (\UC-Omega\sol)\>=\1000):Then:Fix 3:Sci:Else:No\#\

rmal:Fix 3:End

Outpt(\UC-Omega\+1,2,\UC-Omega\sol)

Float:Normal

If \UC-Omega\gmode==0:Then:evalF(y13,x,\UC-Omega\sol)\->\\UC-Omega\ans:\#\

Else:evalF(r13,\LC-theta\,\UC-Omega\sol)\->\\UC-Omega\ans:End

If (fPart abs (\UC-Omega\ans)\>=\1\E\\(-)\12 and fPart abs (\UC-Omega\a\#\

ns)<.001) or (iPart abs (\UC-Omega\ans)\>=\1000):Then:Fix 3:Sci:Else:No\#\

rmal:Fix 3:End

Outpt(\UC-Omega\+1,11,"I")

Outpt(\UC-Omega\+1,13,\UC-Omega\ans)

\UC-Omega\inc+\UC-Omega\sol\->\\UC-Omega\sol

End

Normal:Float

Menu(1,"Next",dchart,2,"Prev",prev,3,"Start",ini,4,"\UC-Delta\ Tbl",inc\#\

,5,"Back",start)

Lbl prev

\UC-Omega\sol-12*\UC-Omega\inc\->\\UC-Omega\sol

Goto dchart

Lbl ini

ClLCD

Input "Start=",\UC-Omega\ini

Goto chart

Lbl inc

ClLCD

Input "\UC-Delta\ Tbl=",\UC-Omega\inc

Goto chart

Lbl quit

ClLCD

Disp "Version 1.10"

Stop

\STOP\



\START\

\COMMENT=Program file dated 01/22/97, 15:32

\NAME=TBLDEF

\FILE=tabledef.85P

 0\->\\UC-Omega\ini

1\->\\UC-Omega\inc

0\->\\UC-Omega\gmode

r13=0

y13=0

ClLCD

Disp "Version 1.10"

Disp "---------------------"

Disp "Released under GNU"

Disp "Public License"

Disp ""

Outpt(8,1,"Ready to run..."

Pause 

TABLE

\STOP\

----end ASCII----