Sharp EL-W531 vs. Casio FX-991EX + 7

White, Black, Silver, Blue

White, Black, Silver, Grey

White, Black, Grey, Blue

White, Black, Grey, Blue, Yellow

Black, Silver, Grey, Blue

White, Black, Silver, Pink, Grey, Blue

Black, Silver, Grey

White, Black, Silver, Grey

Black, Blue, Yellow

161.5 mm

11.1 mm

89.5 mm

180.5 mm

21 mm

161 mm

13.8 mm

11.1 mm

15.5 mm

165.5 mm

5 mm

21.3 mm

184 mm

13.7 mm

162 mm

162 mm

8.6 mm

79.6 mm

77 mm

89 mm

87.5 mm

92 mm

80 mm

80 mm

80 mm

75 mm

100 g

90 g

230 g

205 g

230 g

110 g

100 g

95 g

660 g

BlueAngel

Equation solver, Complex functions, Matrices, Statistical functions

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

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

16 ​

16 ​

8 ​

21 ​

21 ​

10 ​

12 ​

16 ​

8 ​

4 ​

4 ​

8 ​

8 ​

8 ​

2 ​

2 ​

4 ​

1 ​

Calculator

Calculator

Graphing calculator

Graphing calculator

Graphing calculator

Graphing calculator

Calculator

Calculator

Calculator

3D graphics

Parametric graphs, Polar graphs, Differential Equations, Split screen, Rectangular graphs

Parametric graphs, Polar graphs, Recursively defined sequences, Split screen

61 kB

64 kB

64 kB

62 kB

LR44

LR44

R3 (AAA)

R3 (AAA)

R3 (AAA)

R3 (AAA)

R3 (AAA)

LR44

Solar cell

Solar cell

USB, Solar cell

USB

External source (12-230V), USB

Solar cell

Solar cell

USB, Solar cell

Solar cell