The OEM TI-84 Plus C Graphing Calculator features a 2.8-inch diagonal screen with a resolution of 320 x 240 pixels and 140 DPI, providing clear visuals for all your graphing needs. It includes 3MB of Flash ROM memory for data archiving and storage, ensuring you have ample space for your calculations and projects. The calculator is powered by the included TI Rechargeable Battery and comes with a USB port for easy connectivity to computers.