For sale is this tested and working TI-83 Texas Instruments Graphing Calculator. The cover is included and the calculator is in great shape. The battery compartment looks great and is free of any corrosion. The screen looks good and you can see by the photos that the graphing function works great! THERE ARE 2 VERTICAL LINES THAT SHOW UP BLANK sometimes but if you push the back of the calculator behind the screen a little they disappear. Please be sure to review all photos and read the description before purchasing. Items listed as vintage and with their original packaging may be very brittle/breakable. If item is still sealed I will not open to test the durability of the item. Items are sold in "as is" condition. Please ask any questions you may have before purchasing. Shipping is based on a rough estimate of size, weight, and dimensions. You have 3 days to pay for an sale before I file a non-payment claim with. After 5 business days, the item will be relisted and sold to the next available buyer.