our ideal classroom graphing calculator with a user-friendly Computer Algebra System (CAS) features easy readability on a large, split screen display with adjustable contrast. Use familiar algebraic entry-system logic and display answers in symbolic, numeric and graphing views. It's a must for math and science students with 256KB RAM of memory to create and store custom Aplets. Easily share data and connect with PCs using USB and serial ports. Enjoy the reassurance of award-winning HP support.