Countdown
Description
By Eddie Shore, November 2011 (Eddie's Math and Calculator Blog)
Make a program that has the calculator count down from N to 1.
Instructions:
1. Enter N.
2. Press f B to run label B.
Note: The calculator is set to integer mode (f FIX 0). You may need to change the mode back after using this program.
If you own a HP-15C Limited Edition: Replace PSE with R/S, because the pause does not work (unfortunately).
Program Resources
Labels
Name |
Description |
|
B |
Main Routine |
|
0 |
Loop |
|
Storage Registers
Name |
Description |
|
0 |
Counter |
|
Program
Line |
Display |
Key Sequence |
|
000 |
|
|
|
001 |
42,21,12 |
f LBL B |
|
002 |
42, 7, 0 |
f FIX 0 |
|
003 |
43 44 |
g INT |
|
004 |
44 0 |
STO 0 |
|
005 |
42,21, 0 |
f LBL 0 |
|
006 |
45 0 |
RCL 0 |
|
007 |
42 31 |
f PSE |
|
008 |
42, 5, 0 |
f DSE 0 |
|
009 |
22 0 |
GTO 0 |
|
010 |
45 0 |
RCL 0 |
|
011 |
43 32 |
g RTN |
|