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TI-73 & TI-73 Explorer
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    The TI-73, like the older TI-80, is designed for middle school classes, but features flash-upgradable ROM like the rest of TI's newest calculators. It also improves upon the TI-80 with additional statistics functions and a link port for transferring programs and other data.


    Click for a larger version.

    TI-73 TI-73 Explorer


    CPU 6 MHz ZiLOG Z80
    Memory 32K RAM (25K available to user), 64K Flash ROM
    Screen Size 96x64 pixels, 16x8 characters
    Link Port? Yes
    CBL/CBR Support? Yes
    ViewScreen Model Available? Yes
    TI-Presenter Compatible? Yes
    TI Keyboard Compatible? No
    TI-Navigator Compatible? Yes


    » Official TI-73 home page at Texas Instruments
    » TI Connect for the TI-73
    » TI-Graph Link for the TI-73
    » Guide Books from Texas Instruments
    » TI-73 Manual
    » Bid Specifications
    » Graphing Calculator Comparison
    » TI Online Store


    » TI-73 FLASH Downloads.
    Download Handheld Software Applications (Apps) from Texas Instruments. These add many features to your TI-73 including additional language support, StudyCards, text readers and many more.

    » TI-73 ROM Downloads.
    Download ROM updates for your calculator from Texas Instruments. These updates typically fix bugs and or optimize features.

    » TI Connect
    The TI Connect is the latest link cable produced by TI. It has a higher data transfer rate than the TI-Graph Link cable. It's a USB cable and lets you transfer data files (such as programs) between your calculator and your computer.

    » TI-Graph Link
    The TI-Graph Link is the older link cable produced by TI. It does not have as high of data transfer rate, but it does work wih almost all calculators. It connects to your serial port and like TI Connect is widely used to transfer data files (such as programs) between your calculator and your computer.


    From time to time, TI will update the internal code of their calculators to work around bugs, optimize functions, and even add features. This results in several versions of each calculator in the marketplace. You can check the ROM version of your TI-73 using the following key sequence and reading the number on your screen:

    [2nd] [MEM] [1]

    Known ROM versions:

    • 1.3004
    • 1.3007
    • 1.40
    • 1.50
    • 1.60
    • 1.80
    • 1.85
    • 1.90
    • 1.91


    » Link Cables
    Link cables let you transfer data files (such as programs) between your calculator and your computer.

    » Power Extension Page
    The Power Extension instructions will show you how to use AA (instead of AAA) batteries without making any modifications to your calculator.


    » Tutorials at TI-Freakware


    » TI FLASH Studio by Texas Instruments


    Several emulators are available to let you simulate TI calculators on your computer. To locate available emulators and learn how to download a ROM image from your calculator, see our Emulators page.

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