Creating a Program
for the Sharp EL-9600, EL-9650
and EL-9900 graphing calculators

 

To create a program, select PRGM by pressing the 2ndF and PRGM keys in succession, and select NEW using the down arrow key (or press the "C" key).
Activate "create new program" with the ENTER key.
The above reproduced in a short way: "> 2ndF, PRGM > NEW > create new program".

Next, the Sharp EL is expecting you to enter a program title.
For instance, type the name SQUARES and press the ENTER key.
(To get the letter S, press the ALPHA and S keys in succession. However, do not press the ALPHA key if the calculator is (locked) in the ALPHA-mode. Watch the "A" coming with the cursor.)
While running the program SQUARES, later on, it will ask you to enter a number X after which it will display calculated values for X², (X+1)², and (X+2)².

But firstly, the program listing must be completed. So make sure the remaining 10 lines of the following listing are correctly entered.

 

Program Listing

 Help
SQUARES S : press the ALPHA and S keys in succession
Q : use ALPHA, Q key, etc.
Label 5 > 2ndF, PRGM > BRNCH (Branch) > Label
(use the arrow keys)
Select Label, press ENTER, 5, ENTER.
ClrT > 2ndF, PRGM > SCRN (Screen) > ClrT (ClearText)
Input X > 2ndF, PRGM > PRGM > Input
X : X key or ALPHA, X keys
X+3→Z "→" Symbolizes the STO key
Label 6  
Print X² > 2ndF, PRGM > PRGM > Print
To get X² press the X and x² keys.
X+1→X  
If X<Z Goto 6 > 2ndF, PRGM > BRNCH > If
> MATH > INEQ > "<"
> 2ndF, PRGM > BRNCH > Goto
Wait > 2ndF, PRGM > PRGM > Wait
Goto 5  

 

After putting in the program, leave the program edit screen using the QUIT function (press the 2ndF and QUIT keys in succession).

 

Running the Program

> 2ndF, PRGM > EXEC (Execute) > SQUARES (+ENTER)
Hereafter the program is running. Obviously there needs some input.
Enter a number, e.g. 30.

   

(TI-83 images)

Once the program execution is interrupted, view the results, i.c. the calculated values of 30², 31² and 32².
Press ENTER to continue. You now may enter another numerical value. And so on.
To stop the execution, press the ON key (ON, CL).

 

Editing the Program

> 2ndF, PRGM > EDIT > SQUARES
What major change in output is to be expected if you change "X+3→Z" to "X+6→Z"? Verify your answer!
Use the QUIT function to exit the program edit screen and to return to the normal screen.

 

Hein ten Horn
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