Casio fx-991ES PLUS User Manual

• Error is cumulative and tends to be large in the vicinity of a function's
singular point and inflection point.
• The range for calculation results that can be displayed in π form when
using Natural Display is |x| < 10
6
. Note, however, that internal calculation
error can make it impossible to display some calculation results in π
form. It also can cause calculation results that should be in decimal form
to appear in π form.
Specifications
fx-570ES PLUS
Power Requirements:
AAA-size battery R03 (UM-4) × 1
Approximate Battery Life:
2 years (based on one hour of operation per day)
Power Consumption:
0.0002 W
Operating Temperature:
0°C to 40°C (32°F to 104°F)
Dimensions:
13.8 (H) × 77 (W) × 161.5 (D) mm
1
/
2
" (H) × 3" (W) × 6
3
/
8
" (D)
Approximate Weight:
105 g (3.7 oz) including the battery
fx-991ES PLUS
Power Requirements:
Built-in solar cell; button battery LR44 × 1
Approximate Battery Life:
3 years (based on one hour of operation per day)
Operating Temperature:
0°C to 40°C (32°F to 104°F)
Dimensions:
11.1 (H) × 77 (W) × 161.5 (D) mm
3
/
8
" (H) × 3" (W) × 6
3
/
8
" (D)
79

Casio fx-991ES PLUS Specifications

General

Type	Scientific
Cover	No
Form factor	Desktop
Control type	Buttons
Product color	Gray
Digits	15 digits
Display type	Dot-matrix
Display resolution	96 x 31 pixels
Display number of lines	10 lines
Storage media type	Not available
Battery life	3 year(s)
Battery type	LR44
Power source	Battery/Solar
Number of batteries supported	1
Symbolic notation	Square root
Conversion between	Decimal, Fraction, Percent
Convert angles from degrees to	Gradian, Radian
Random number/integer generator	Yes

Weight and Dimensions

Depth	162 mm
Width	80 mm
Height	11.1 mm
Weight	95 g