SHARP Scientific Calculator General Calculations Simulation Calculations Simultaneous Linear Equations Quadratic/Cubic Equations Complex Number Calculations Matrix Calculations List Calculations - Model: EL-520F - Brand: SHARP - Features: TWINS POWER - Type: Scientific Calculator - Key Arrangement: Multi-function Keys - Display: Large LCD Screen I bought this for school, but I don't remember using it much and it's been stored away. There is no instruction manual. Thank you for looking.