DATAMATH CALCULATOR MUSEUM
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
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|
|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
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
• 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.
If you have additions to the above article please email: email@example.com.
© Joerg Woerner, July 4, 2002. No reprints without written permission.