Texas Instruments TI-7 MathMate

Date of introduction:  1991 Display technology:  LCD
New price:  ($7.99 in 2003) Display size:  8
Size:  4.6" x 2.5" x 0.35"
 116 x 64 x 9 mm3
Weight:  1.6 ounces, 46 grams Serial No:  
Batteries:   Date of manufacture:  wk 49 year 1991
AC-Adapter:   Origin of manufacture:  USA (LTA)
Precision:  8 Integrated circuits:  Toshiba 6M13S
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

Is this four banger really a scientific calculator? You know basic calculators like the TI-106 sporting the square-root function. And this one? The MathMate uses the AOS system introduced with the SR-52 more than 20 years ago. 

Try this calculation on your four banger: 2 + 3 * 4 = ?
The MathMate gives you the correct answer of 14 like the big brother Math Explorer. Don't miss the stylist and innovative TI-10.

Texas Instruments was always listening for the demands of the classroom. Read some guidelines how to select the right calculator to ensure long-term satisfaction:

Solar Power: Eliminates the need for batteries. The TI ANYLITE™ technology
   allows operation even in low light.
Durability: Plastic keys are tougher and more tamper-proof than rubber keys.
   An extra window protects the LCD display and the solar cells.
Keyboard: Color coding helps children quickly identify functional key groupings.
   Large, well spaced keys are easier to find and press.
Packaging: With a convenient storage caddy 10 or even 30 calculators are
   grouped together.
Functions: Choose a model with only the specific functions you need.
   Unnecessary functions clutter the keyboard and may impede a student's
   understanding of the concepts.

In 1995 Texas  Instruments provided a total of 6 different calculators (not counting the Graphing Calculators TI-80, TI-81, TI-82 and TI-85) to meet the above demands. View a comparison table here.

Dismantling this TI-7 MathMate manufactured in December 1991 in Lubbock, Texas reveals a very innovative and efficient construction centered around a Toshiba T6M13S single-chip calculator circuit.

In 2004 the internal construction of the TI-7 MathMate was revised and a battery supported the solar cells.

Stokes Publishing Company, Inc. based in Sunnyvale, California sold a companion for the teacher, view the Elementary.

AOS™ is a trademark of Texas Instruments.
Math Explorer ™ is a trademark of Texas Instruments.


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© Joerg Woerner, July 4, 2002. No reprints without written permission.