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Functions
43
Conversions
The conversions are listed in Figure 3-2. The conversions all
expect an input value in the X-register and leave the result there.
Note that angle conversions are given in Figure 3-1.
Sample Case: Octal/Decimal Conversions. Many computers are
designed to work with octal (base 8) numbers instead of decimal
(base 10) numbers. The
function on your HP-65 allows
you to make octal/decimal conversions with ease. For example,
find the octal equivalent of the decimal number 512.
Press
See Displayed
Comment
512 [
1000.00
Octal representation of 512;,.
Convert the octal number 2000 to its decimal equivalent:
2000 &
1024.00
Decimalequivalent of 2000,.
Sample Case: Truncating at Decimal Point. The Personal Invest-
ment Program (presented in the Introduction) expects you to key
in the dates using the format mm.yyyy. The program separates
mm from yyyy using the truncation functions. Do the same for
the date 12.1980.
Press
See Displayed
Comment
E=3 () 4
12.1980
12.1980
i
12.0000
Answer: integer part.
(g
EEETR
Recall original value.
I
0.1980
Answer: fractional part.
R
C=3 ()2
Reset display to two places.
Sample Case. Absolute Value. Some calculations require the mag-
nitude of a number. To get this from the keyboard, you could
observe the number and change the sign if negative (using [CHS) ).
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