Calculated Industries 4020 - Key Definitions and Basic Operations; Basic Calculator Operations; Data Management Keys

POCKET REFERENCE GUIDE — 1
Basic Function Keys
+ – x Arithmetic operation keys.
÷ =
0 – 9 Keys used for entering
and • numbers.
%
Percent Key — Four-func-
tion (+, –, x, ÷) percent key.
O
Off Key — Turns all power
off, clearing all non-perma-
nent registers.
o
On/Clear Key — Turns on
power. Pressing once
clears the display. Pressing
twice clears all temporary
values.
Ç
Convert Key — Used with
the dimensional keys to
convert between dimen-
sions or with other keys to
access special functions.
ß
Store Key — Used for stor-
ing values.
®
Recall Key — Used for
recalling stored values.
KEY DEFINITIONS