Texas Instruments TI-5040

Date of introduction:  1976 Display technology:  Fluorescent
New price:  $149.95, 109.95
 DM 498.00
Display size:  10
Size:  9.5" x 9.2" x 2.7" Printer technology:  Thermal
Weight:  3 pounds 5 ounces Serial No:  1409135
Batteries:   Date of manufacture:  wk 20 year 1981
AC-Adapter:  120 V Origin of manufacture:  USA
Precision:  10 Integrated circuits:  TMC0261
Memories:  1 + 1    
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (US: 6.0 MByte)

It took a long time between the first calculator based on TI's thermal printer technology - the Canon Pocketronic - and this universal printing desktop calculator. Introduced 1976 it features both a 10 digit flourescent display and a quiet, convenient thermal printer. Together with a 4-key memory this calculator defined the standard in its class.

This calculator was a great success for Texas Instruments, it was produced more than 5 years before the TI-5142 was introduced. Later models like the TI-5040 II or the TI-5130 had shorter life cycles.

The style of the keyboard and some design elements of the TI-5040 were adopted both by non-printing calculators like the TI-5100 and print-only calculators like the TI-5015

The TI-5220 printing desktop calculator with similiar specifications but sporting a 12 digits display was introduced in 1977 together with its huge sibbling TI-5225. Don't miss the TI-5135 introduced in 1980.

The first portable printing calculator TI-5050 appeared one year earlier on the market. 

Even Texas Instruments never mentioned the rare TI-500, a printing calculator introduced already in 1974.

Printer paper:

The thermal paper used with this printer (TP-30250 2-1/2" wide and 14 Feet length) was discontinued long time ago. In 2008 Appleton (Appleton, WI) manufactured with the Alpha 800-2.4 paper still a compatible paper.

Find here an excerpt from the Texas Instruments Incorporated leaflet CL-199J dated 1981:


Offers the best of two worlds. An easy-to-read display. A printed tape.

For quick calculations use the large bright green 10-digit display, with commas and a floating decimal point. Or when the tape is needed, the whisper-quiet thermal printer delivers a crisp, clean copy of your calculations.
Special features to help solve business calculations or auditing problems include: A four-function memory. An independent add register (to simplify extensions, cross-footing and invoices). An automatic constant. A percent key. This combination of memory and independent add register results in a powerful "dual memory" capability.

Texas Instruments, 1981

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If you have additions to the above article please email:

Joerg Woerner, December 5, 2001. No reprints without written permission.