Contrast Adjustment; Display Readout - Citizen SR-281 User Manual

Contrast adjustment

Pressing the [ – ] or [ + ] following [ MODE ] key can make the contrast
of the screen lighter or darker. Holding either key down will make the
display become respectively lighter or darker.

Display readout

The display comprises two lines and indicators. The upper line is a dot
display up to 128 characters. The lower line is capable of displaying a
result of up to 12 digits, as well as 2-digits positive or negative
exponent.
When formulas are input and executed the calculation by [
they are displayed on the upper line, and then results are shown on
the lower line.
The following indictors appear on the display to indicate you the
current status of the calculator.
Indicator
M
–
E
STO
RCL
2nd
HYP
ENG
CPLX
CONST
DEGRAD
BIN
OCT
HEX
( )
TAB
STAT
REG
EDIT
CPK
USL
LSL
i
Meaning
Running memory
Result is negative
Error
Storing variable mode is active
Recalling variable mode is active
2nd set of function keys are active
Hyperbolic-trig function will be calculated
Engineering symbol notation
Complex number mode is active
Display physics constants
Angle mode : DEGrees, GRADs, or RADs
Binary base
Octal base
Hexadecimal base
Open parentheses
Number of decimal places displayed is fixed
Statistics mode is active
Regression mode is active
Statistics data is being edited
CPK : Process capability
CP : Precision capability
Set upper specification limit
Setting lower specification limit
Imaginary part
Allow to use undo function
-E3-
],