|
|
Introduction 13
|
|
|
|
4.
|
If the card does not read properly, the display will blink and program memory will be cleared; press RTN
and reinsert the card. (If cards are frequently misread, refer to Appendix C.)
|
|
|
5.
|
Upon completion insert the card in the upper “window” slot to identify the top row keys.
|
|
|
|
You are now ready to use the program:
|
|
Sample Case: Growth of a Savings Plan
|
|
Starting on January 1, 1974, you add $100 per month to your savings of $1000 invested at 12% per annum,
compounded monthly. How much will you have saved on September 1, 1975?
|
|
|
To solve the problem, just follow the instructions given in standard format in Figure 0-1. You read the
“instructions,” line by line, keying in the required “input,” pressing the indicated “key(s),” and
observing the displayed “output.” The amount saved is displayed after the future date is entered via
the E key.
|
|
|
STEP
|
INSTRUCTIONS
|
INPUT
DATA/UNITS
|
KEYS
|
OUTPUT
DATA/UNITS
|
|
1
|
Enter program (Personal
|
|
|
|
|
|
Investment Program) as
|
|
|
|
|
|
shown above
|
|
|
|
|
2
|
Key in start date (Jan., 1974)
|
1.1974
|
|
0.00
|
|
3
|
Key in present savings ($1000)
|
1000
|
|
1000.00
|
|
4
|
Key in monthly savings (100)
|
100
|
|
1000.00
|
|
5
|
Key in annual interest rate (12)
|
12
|
|
1000.00
|
|
6
|
Key in future date (Sept., 1975)
|
9.1975
|
|
3444.11
|
|
|
|
|
|
ANSWER
|
|
|
NOTE: ENTER here is
|
|
|
|
|
|
NOTE: abbreviated as
|
|
|
|
|
|
|
Figure 0-1. Instructions for Running Personal Investment Program
|
|
|
A pad of program worksheets in this format is included with your HP-65 for use with the blank cards when you
write your own programs.
|
