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2 Keyboard
2·1 Keyboard Block Chart
2·2 Explanation of the Keyboard
Display
Mantissa Part:
Displays mantissa with scientific floating
point system and its sign, or value with
fixed decimal point system and its sign.
Displays the step number in the Learning,
Checking modes or step setting in the
Operation mode.
Exponent Part:
Displays an exponent and its sign.
When a value is represented in the fixed
decimal point system, this part is blank.
Status Indicating Lamps
ERROR
I nd icates error state.
(See I §1. 3-3P7)
ENT
LRN
CHE
I nd icates entry state.
I nd icates Learn Mode.
' I
.
IndIcates Check Mode.
(See IV
MCR
Indicates running of magnetic
tape cartridge reader.
Round·Form Slide Switch
W
Used for round·up, round·off, or round·
L
5/""
down to the preselected decimal digits of
the results in manual calculation. Round-
ing is performed, according to designa -
tion, at the stage of obtaining the final
result. Set the switch to the left for
rounding up, to the center for rounding
off, and to the right for rounding down.
L
Round up
5/4
Round off
•
. ,
Round down
Decimal Point Selector dial
. ...
Used for designating the dec imal poi nt
"
"
.
position in the manual calculation result.
DBG
Indicates Debug Mode.
§1.1 P13)
Designated settings are 0, 1, 2,
3,4,5,6,
UNFIN
I nd icates that a combination
and F (Scientific floating point) positions
4
instruction is not yet finished.
below the decimal point.
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