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>> 73U file

73U file format description

Many people share .73u files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .73u file can be edited, converted or printed with. On this page, we try to provide assistance for handling .73u files.

1 filename extension(s) found in our database.

.73u - TI-73 Explorer OS Upgrade File

73U file is a TI-73 Explorer OS Upgrade File. TI-73 is a graphing calculator made by Texas Instruments. It was originally designed in 1998 as a replacement for the TI-80 for use at a middle school level.

.73u file format description:
73U format
TI Navigator
Other files
- / -
TI-73 Explorer OS Upgrade File related links:
TI-73 Explorer OS Upgrade File related extensions:
TI-73 Backup
TI-73 Constant
TI-73 Application
TI-73 Data List
TI-83 Backup Memory Image
TI-83 Complex Variable Data

Naturally, other applications may also use the .73u file extension. Even harmful programs can create .73u files. Be especially cautious with .73u files coming from an unknown source!

Can't open a .73u file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .73u file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

73, 73y, 73i, 73k

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

TI-73 Bitmap
TI-73 Application

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