Color: BlackA Classic Graphic CalculatorKEY_TAB With all the functions of a standard graphic calculator the CS121 is suitable for students or professionals of any level. The CS121 contains a modern operating system and 70x70 LCD screen capable of displaying graphs and functions at the same time. Its programmable system makes grasping of concepts easy and efficient work for professionals. KEY_TAB Suggested CoursesThe CS121 is appropriate for Pre-Algebra, Algebra I, Algebra II, Geometry, Trigonometry, Calculus, AP Calculus, AP Statistics, Biology, Chemistry, Physics, Finance & Business. KEY_TAB