PriceSpy UK
Impartial price comparison

Sharp EL-W531 vs. Casio FX-991EX + 1

Sharp EL-W531

Sharp EL-W531

£6.20

£12.18 Incl. delivery
Casio FX-991EX

Casio FX-991EX

£21.99

Free delivery
Casio FX-9860G II

Casio FX-9860G II

£110.93

Free delivery
Colour/ material
White, Black, Silver, Blue
White, Black, Silver, Grey
Black, Silver, Grey, Blue
Dimensions (WxHxD)
Depth
161.5 mm
11.1 mm
21 mm
Height
15.5 mm
165.5 mm
184 mm
Width
79.6 mm
77 mm
92 mm
Product weight
100 g
90 g
230 g
Eco labels
Features
Equation solver, Complex functions, Matrices, Statistical functions
Economic functions, Equation solver, Complex functions, Matrices, Statistical functions
Display light, Watch, Programmable, Calendar, Equation solver, Complex functions
Display characters/line
16 ​
16 ​
21 ​
Display Lines
4 ​
4 ​
8 ​
Type
Calculator
Calculator
Graphing calculator
Graphing feature
Parametric graphs, Polar graphs, Recursively defined sequences, Split screen
RAM (total)
64 kB
RAM (usable)
ROM memory (usable)
Battery operated
Yes
Yes
Yes
Battery type
LR44
LR44
R3 (AAA)
External power connection
Solar cell
Solar cell
External source (12-230V), USB