HP HP-28S - Page 33

You can move to the first catalog entry for a particular letter by press-
ing the letter key. Try 'T'.
IT]
I ~I I
CImmD_DHIIIIBEIE!mD
The first "T" command is the TAN function. If you press a symbol
(non-letter) key on the left-hand keyboard, the catalog moves to the
first catalog entry for that symbol. Try "~".
The first "~" command is the ~ + command. If you press a symbol
key on the left-hand keyboard, and no commands begin with that
symbol, the catalog moves to +, the first non-alphabetical command.
rn 11lIm1llll1l_1ImI1HI!IlI1!IIIiI1
Check the usage for +.
USE
ftN'NuMber
1: Real NUMber
CImmD ___ E!mD
This shows that you can add two real numbers. Check the next
combina tion.
NEXT
This shows that you can add real and complex numbers. Check the
next combination.
NEXT
~~ex NUMber
1: Real NUMber
CImmD ___ E!mD
This shows that the real and complex numbers can be in either order.
32 1: Getting Started