Zenith Z-170, Owner'S Manual, Page: 41 / 147

Display Symbols
35
Operation
The calculator displays standard mathematical symbols: + ,
-
,
x
, -:- ,
and
= .
The only symbols that may be unique are:
+
M, - M,
x
M,
-:- M which mean the Memory Recall (MR key) was used to bring the
Memory Value into a calculation. MY means "the current Memory Value
is ... ". * ERROR* signifies that an error has occurred. You may have typed
or calculated a number longer than 16 digits or entered a sequence of
keystrokes that the computer can't understand. Press the CE key to clear
the error condition.
Memory Value
The Memory Value is shown in the lower portion of the calculator window
and is indicated by the characters
MV.
The memory value is kept in
NVRAM, the battery-supported RAM memory. Once established, a number
in the Memory Value stays there even if power is interrupted or you
run other programs. Initially it contains zero. You can add to it by pressing
M
+
after typing a number or calculation. You can subtract from it the
same way by pressing
M - .
You can use the Memory Value in calculations
by pressing
MR
(for Memory Recall). You reset it to zero by pressing
MC
(Memory Clear).
The Memory Value can be transferred to other programs. For instance,
suppose you're in a word processing program and you need to add a
list of figures, you press the Calculator Icon. You can now perform your
calculations and place them in the Memory Value. To return to the word
processing program, you press the Disk Icon. When your cursor is at
the point where you want the value to be entered, press and hold the
ALT key while pressing the Calculator Icon. The Memory Value will appear
at the cursor.