A 73t file extension is related to the TI Connect software for Windows.
What is 73t file? How to open 73t files?
A 73t file extension is associated with the TI Connect a software for Microsoft Windows operating system that allows users to connect TI calculators to computer.
A 73t file stores some kind of data used by TI Connect.
and possible program actions that can be done with the file: like open 73t file, edit 73t file, convert 73t file, view 73t file, play 73t file etc. (if exist software for corresponding action in File-Extensions.org's database).
Click on the software link for more information about TI Connect. TI Connect uses 73t file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).