HP -18C Owner's Manual page 162

Question: How do I clear all or portions of memory?
Answer:
.1
CLEAR
I
clears the calculator line . •
1
CLEAR ALL
I
clears vari-
ous portions of memory, depending on which menu the HP-18C is
displaying. (Look up
1
CLEAR ALL
I
in the subject index for a list of page
references.) Erasing the entire contents of memory is covered in
Erasing Continuous Memory
on page 188.
Question: Why am I getting the wrong answer using the
TVM
menu?
Answer: Before beginning a TVM calculation, be sure to clear the
TVM
variables
(.1
CLEAR ALL
I)
set the appropriate payment mode
(mortgages and loans are typically End mode calculations), and spec-
ify the number of payments per year . . .
Question: How do I indicate multiplication in a formula typed into
the solver?
Answer: You must use the multiplication sign (0) on the right side
of the keyboard. You
cannot
use the [K] letter key to indicate
mul tiplica tion.
Question: How do I type a comma in alpha mode?
Answer: Press .
0 .
Question: My numbers contain commas instead of periods as deci-
mal points. How do I restore the periods?
Answer: Changing the decimal point is covered in
Interchanging
the Period and Comma in Numbers
on page 44.
Question: What does an
H E" in a number (for example, 2.51E - 13)
mean?
Answer: The number is
very large or very small. Refer to
Scientific
Notation
on page 44.
Question: The calculator has displayed the message
INSUFFICIHH
~lE~lORY. What should I do?
Answer: Refer to
Managing Calculator Memory
on page 189 for in-
structions on how to reclaim memory for your use .
160 A: Customer Support, Warranty, and Service