What is a 73I file?
Texas Instruments created software called as TI ScreenCapture, which comes bundled with its TI Connect group of programs. These programs aid in interacting with the TI-73/82/83/85/86/89/92, which are programmable graphing calculators. The ScreenCapture software saves a screenshot of the calculators while they are connected with the computer. Such images are stored in the 73I file extension. These images allow users to share relevant information with others.
How to Open 73I Files
How to Make 73I Files
Exact steps for creating 73I files will vary by program and operating system. Download one of the above listed programs and you should be able to follow typical procedure for opening files or creating files from the File menu. Typically you will select File > Open or File > New and continue through the prompts. Some programs may follow a different procedure for either creation or opening of files.