Built-in USB port, an improved display. Preloaded applications maximize student performance in geometry, statistics, algebra, physics, chemistry, biology and others. Preloaded calculator software applications include topics in Algebra 1 and Vernier EasyData and many others. Offers 480K of FLASH memory, 24K of available RAM memory, internal clock with date and time display, 14 interactive zoom features, and 8-line by 16-character display. Also includes TI Connectivity Cable. Built-in USB port and external cable allow fast data transfers between linked calculations and computers -unit-to-unit file sharing. Graphs 10 rectangular functions, 6 parametric expressions, 6 polar expressions, and 3 recursively defined sequences. 4 AAA batteries w/ Silver Oxide battery backup to protect RAM memory