Sharp EL-W531XH vs. Casio FX-991EX + 9

Sharp EL-W531XH

Sharp EL-W531XH

£21.30

Unknown delivery cost
Casio FX-991EX

Casio FX-991EX

3.8

£22.80

£27.89 Incl. delivery
Casio FX-CG50

Casio FX-CG50

£96.00

£99.99 Incl. delivery
Casio FX-9750G II

Casio FX-9750G II

4.3

£66.00

Free delivery
Casio FX-85GT Plus

Casio FX-85GT Plus

£10.94

£14.92 Incl. delivery
Casio FX-9860G II

Casio FX-9860G II

£71.80

£77.59 Incl. delivery
Casio FX-83GT

Casio FX-83GT

£8.99

£11.98 Incl. delivery
Casio FX-85GT

Casio FX-85GT

£10.80

£13.79 Incl. delivery
Casio FX-991ES Plus

Casio FX-991ES Plus

£7.80

£13.78 Incl. delivery
Texas Instruments TI-84 Plus

Texas Instruments TI-84 Plus

4.3

£85.20

£116.95 Incl. delivery
Casio FX-83GT Plus

Casio FX-83GT Plus

£10.34

£13.79 Incl. delivery
Colour/ material
White, Black, Silver, Green
White, Black, Silver, Grey
White, Black, Grey, Blue
White, Black, Grey, Blue
White, Black, Silver, Pink, Grey, Blue
Black, Silver, Grey, Blue
White, Black, Silver, Pink, Grey, Blue
White, Black, Silver, Blue
White, Black, Silver, Grey
Black, Silver, Grey, Blue, Yellow
Black, Silver, Grey
Dimensions (WxHxD)
Depth
11.1 mm
89.5 mm
180.5 mm
11 mm
21 mm
161 mm
155 mm
11.1 mm
192 mm
13.8 mm
Height
165.5 mm
5 mm
21.3 mm
162 mm
184 mm
13.7 mm
12 mm
162 mm
27 mm
162 mm
Width
77 mm
89 mm
87.5 mm
80 mm
92 mm
80 mm
84 mm
80 mm
89 mm
80 mm
Product weight
90 g
230 g
205 g
90 g
230 g
110 g
110 g
95 g
268 g
100 g
Eco labels
Features
Economic functions, Equation solver, Complex functions, Matrices, Statistical functions
Programmable, Colour screen, CAS (Computer Algebra System), Economic functions, Statistical functions
Programmable, Economic functions, Equation solver, Complex functions, Matrices, Statistical functions
Equation solver, Complex functions, Statistical functions
Display light, Watch, Programmable, Calendar, Equation solver, Complex functions
Programmable, Statistical functions
CAS (Computer Algebra System), Statistical functions
Programmable, CAS (Computer Algebra System), Economic functions, Equation solver, Complex functions, Matrices
Watch, Programmable, Calendar, Economic functions, Equation solver, Complex functions, Matrices, Statistical functions
Equation solver, Complex functions, Statistical functions
Display characters/line
16 ​
16 ​
8 ​
21 ​
12 ​
21 ​
10 ​
10 ​
16 ​
16 ​
12 ​
Display Lines
4 ​
4 ​
8 ​
8 ​
8 ​
2 ​
4 ​
8 ​
2 ​
Type
Calculator
Calculator
Graphing calculator
Graphing calculator
Calculator
Graphing calculator
Graphing calculator
Graphing calculator
Calculator
Graphing calculator
Calculator
Graphing feature
3D graphics
Parametric graphs, Polar graphs, Differential Equations, Split screen, Rectangular graphs
Parametric graphs, Polar graphs, Recursively defined sequences, Split screen
Parametric graphs, Polar graphs, Recursively defined sequences, Differential Equations, Split screen, Rectangular graphs
RAM (total)
61 kB
64 kB
64 kB
24 kB
RAM (usable)
62 kB
24 kB
ROM memory (usable)
0.48 MB
Battery operated
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Battery type
R3 (AAA)
LR44
R3 (AAA)
R3 (AAA)
LR44
R3 (AAA)
R3 (AAA)
R3 (AAA)
LR44
R3 (AAA)
R3 (AAA)
External power connection
Solar cell
USB, Solar cell
USB
Solar cell
External source (12-230V), USB
Solar cell
Solar cell
USB, Solar cell
External source (12-230V), USB
Solar cell