Introduction
The TI-85 was designed as a powerful engineering and calculus calculator. It was the first TI calculator to have a link port(finally) and assembly programming capability (through an unintentional loophole (who ever found this was a genius)). It has since been eclipsed by the TI-86, which features TI-85 compatibility along with more advanced features. Note: Some of this was taken from ticalc

Model Specifications
CPU : 6 MHz ZiLOG Z80
Memory 28K RAM
Screen Size : 128x64 pixels; Black and White
Link Port? Yes