Casio fx-991CW Scientific Calculator

1. Feature :Variables list
2. 9 variables
3. Prime factorization
4. Random integers
5. Coordinate transformation
6. Power calculation
7. Trigonometry
8. Fraction calculations
9. Combination and permutation
10. Statistics (list-based STAT data editor standard deviation, regression analysis, statistics list)
11. Table function
12. UNDO
13. Digit Separator Multiline display
14. QR Codes
15. Additional functionsSpreadsheet calculations
16. Integration calculations
17. Differential calculations
18. Solver function
19. Complex number calculations
20. Base-N calculations
21. Equation calculations
22. Matrix calculation
23. Vector calculations
24. Scientific constants
25. Metric conversions
26. Advanced statistical distributional calculations
27. Inequality calculations
28. Ratio calculations
29. Engineering symbol calculations
30. SpecificationsPower supply: Solar & battery (LR44 x 1)
31. Approximate battery life: 2years*(LR44 x 1)
32. Dimensions H x W x D(mm): 10.7 x 77 x 162
33. Approximate weight(g): 95
34. Case style: Hard protective cover
35. Dot matrix display: 192 x 63 dots
36. Mantissa + exponent digits: 10+2
37. Internal operation digits: 23
38. Intuitive, approachable new designHigh-definition & 4-gradation display
39. Intuitive cursor operation
40. Key shape designed for accurate entry
41. Simple key layout and labeling
42. Natural textbook display
43. Intuitive, easy-to-learn icon display
44. List display function for thorough, speedy learning
45. High-speed calculations
46. Online visualization service using QR codes
47.