HP HP-65 - Page 15

4. If the card does not read properly, the display will blink
and program memory will be cleared; press and re-
insert the card.
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 [ key.
Step INSTRUCTIONS DATA/UNITS KEYS DATA/UNITS
1 Enter program (Personal :":]
Investment Program) as :I:I
shown above [:[:
2| Key in start date (Jan., 1974) tae7a oAl 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 I: 1000.00
6 Key in future date (Sept., 1975) 91975 E [ 3a4am
[T answer
NOTE: [ENTER# here is ’:”:
abbreviated as '+ :][:
Figure 0-1. Instructions for Running Personal Investment Program
A pad of program worksheet in this format is included with your
HP-65 for use with the blank cards when you write your own
programs.