HP HP-15C

80 Section 6: Programming Basics
Example: Write a program for 5x
4
+ 2x
3
as (((5x + 2)x)x)x, then evaluate
for x = 7
Keystrokes
Display
| ¥
000-
Assumes position in memory
is line 000. If it is not, clear
program memory.
´ b B
001-42,21,12
5
002- 5
*
003- 20
5x.
2
004- 2
+
005- 40
5x + 2.
*
006- 20
(5x + 2)x.
*
007- 20
(5x + 2)x
2
.
*
008- 20
(5x + 2)x
3
.
| n
009- 43 32
| ¥
Returns to Run mode, Prior
result remains in display.
7 v v
v
7.0000
Loads the stack (X-, Y-, Z-,
and T-registers) with 7.
´ B
12,691.0000
Nonprogrammable Functions
When the calculator is in Program mode, almost every function on the
keyboard can be recorded as an instruction in program memory. The
following functions cannot be stored as instructions in program memory.
´ CLEAR u
| ‚
Â
´ CLEAR M
| W
−
´ %
| ¥
=/.
´ U
t “ nnn
=/-