Casio FX-991EX vs. Casio FX-CG50 + 6

White, Black, Silver, Grey

White, Black, Grey, Blue

White, Black, Grey, Blue, Yellow

Black, Silver, Grey, Blue

Black, Silver, Grey

White, Black, Silver, Grey

Black, Blue, Yellow

White, Black

11.1 mm

89.5 mm

180.5 mm

21 mm

13.8 mm

11.1 mm

15 mm

165.5 mm

5 mm

21.3 mm

184 mm

162 mm

162 mm

8.6 mm

23 mm

77 mm

89 mm

87.5 mm

92 mm

80 mm

80 mm

75 mm

86 mm

90 g

230 g

205 g

230 g

100 g

95 g

660 g

210 g

BlueAngel

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

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

16 ​

8 ​

21 ​

21 ​

12 ​

16 ​

8 ​

16 ​

4 ​

8 ​

8 ​

8 ​

2 ​

4 ​

1 ​

Calculator

Graphing calculator

Graphing calculator

Graphing calculator

Calculator

Calculator

Calculator

Graphing calculator

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, 3D graphics, Differential Equations, Rectangular graphs

61 kB

64 kB

64 kB

62 kB

65536 kB

100 MB

LR44

R3 (AAA)

R3 (AAA)

R3 (AAA)

R3 (AAA)

LR44

Li-Ion

Solar cell

USB, Solar cell

USB

External source (12-230V), USB

Solar cell

USB, Solar cell

Solar cell

External source (12-230V), USB