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14
Basic Keyboard/PROGRAMMING USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
1. Program the calculator to find Pythagorean triples. Pythagorean triples are
three numbers x, y, and z that satisfy x
2
+ y
2
= z
2
.
2. Create a new program with the name PYTHAG. Enter the following program
and remember to press ENTER at the end of each line. If you make a
mistake, use the calculator’s editing features to correct the error.
3. Enter the following program using the Advanced Keyboard:
Input N PRGM A 3 ALPHA N ENTER
2⇒J 2 STO ALPHA J ENTER
1⇒K 1 STO ALPHA K ENTER
Label A PRGM B 0 1 ALPHA A ENTER
If √(J
2
+K
2
)≠ipart PRGM B 0 3 2ndF √
(
ALPHA J
(√(J
2
+K
2
)) Goto B x
2
+ ALPHA K x
2
)
MATH F 2
MATH B 3
(
2ndF √
(
ALPHA
J x
2
+ ALPHA K x
2
))
PRGM B
0 2 ALPHA B ENTER
Print J PRGM A 1 ALPHA J ENTER
Print K PRGM A 1 ALPHA K ENTER
Print √(J
2
+K
2
) PRGM A 1 2ndF √
(
ALPHA
J x
2
+ ALPHA K x
2
)
ENTER
Print “ PRGM A 1 PRGM A 2 ENTER
Wait PRGM A 4 ENTER
Label B PRGM B 0 1 ALPHA B ENTER
K+1⇒K ALPHA K + 1 STO ALPHA K ENTER
If K≤(J–1) PRGM B 0 3 ALPHA K MATH
Goto A F 6 ( ALPHA J – 1
)
PRGM B 0
2 ALPHA A ENTER
J+1⇒J ALPHA J + 1 STO ALPHA J ENTER
1⇒K 1 STO ALPHA K ENTER
If J≤N PRGM B 0 3 ALPHA J MATH
PYTHAGOREAN TRIPLES
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