Impartial price comparison

Sharp EL-W531 vs. Casio FX-991EX + 8

Show differences

Sharp EL-W531

£6.20

£11.48 Incl. delivery

Casio FX-991EX

3.8

£21.90

£27.89 Incl. delivery

Casio FX-9750G II

4.3

£59.99

Free delivery

Casio FX-85GT Plus

£11.17

£15.44 Incl. delivery

Casio FX-9860G II

£81.56

£99.99 Incl. delivery

Casio FX-83GT

£8.99

£11.98 Incl. delivery

Casio FX-83GT Plus

£10.34

£15.33 Incl. delivery

Casio FX-991ES Plus

£7.80

£13.78 Incl. delivery

Texas Instruments TI Little Professor Solar

£13.25

£17.46 Incl. delivery

Texas Instruments TI-Nspire CX CAS

4.2

£99.00

£146.02 Incl. delivery

Colour/ material

White, Black, Silver, Blue

White, Black, Silver, Grey

White, Black, Grey, Blue

White, Black, Silver, Pink, Grey, Blue

Black, Silver, Grey, Blue

White, Black, Silver, Pink, Grey, Blue

Black, Silver, Grey

White, Black, Silver, Grey

Black, Blue, Yellow

White, Black

Dimensions (WxHxD)

Depth

161.5 mm

11.1 mm

180.5 mm

11 mm

21 mm

161 mm

13.8 mm

11.1 mm

15 mm

Height

15.5 mm

165.5 mm

21.3 mm

162 mm

184 mm

13.7 mm

162 mm

8.6 mm

23 mm

Width

79.6 mm

77 mm

87.5 mm

80 mm

92 mm

80 mm

75 mm

86 mm

Product weight

100 g

90 g

205 g

90 g

230 g

110 g

100 g

95 g

660 g

210 g

Eco labels

BlueAngel

Features

Equation solver, Complex functions, Matrices, Statistical functions

Economic functions, Equation solver, Complex functions, Matrices, 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

Equation solver, Complex functions, Statistical functions

Programmable, CAS (Computer Algebra System), Economic functions, Equation solver, Complex functions, Matrices

Programmable, Colour screen, CAS (Computer Algebra System), Equation solver, Complex functions, Matrices, Statistical functions

Display characters/line

Display Lines

Type

Calculator

Graphing calculator

Calculator

Graphing calculator

Calculator

Graphing calculator

Graphing feature

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, 3D graphics, Differential Equations, Rectangular graphs

RAM (total)

64 kB

RAM (usable)

62 kB

65536 kB

ROM memory (usable)

100 MB

Battery operated

Yes

Battery type

LR44

R3 (AAA)

LR44

R3 (AAA)

LR44

Li-Ion

External power connection

Solar cell

USB

Solar cell

External source (12-230V), USB

Solar cell

USB, Solar cell

Solar cell

External source (12-230V), USB