Casio | Scientific Calculator | FX-991MS | 2nd Edition |

Features:

• Two-way power (Solar + Battery)
• Designed and engineered for easy operation.
• All the features of the existing V.P.A.M. series plus a new 2-line display and a useful Replay function. All this helps to make mathematics easier to use and easier to understand than ever before.
• STAT-data editor
• Back-step viewing and editing of input data.
• Multi-replay
• Quick and easy recall of previously executed formulas for editing and re-execution.
• 10-digit mantissa + 2-digit exponential display.
• Dot matrix display
• High-resolution screen provides beautiful looking graphs every time.Fraction calculations
• Combination and permutation
• Statistics (STAT-data editor, Standard deviation, Regression analysis)
• 9 variable memories
• Comes with slide-on hard case