DATAMATH CALCULATOR MUSEUM

Texas Instruments TI-10

Date of introduction:	February 2002	Display technology:	LCD
New price:	$12.99 (SRP 2008) $17.25 (SRP 2020)	Display size:	11 +11 characters
Size:	6.8" x 3.2" x 0.50" 172 x 82 x 13 mm³
Weight:	4.1 ounces, 117 grams	Serial No:
Batteries:	CR2025	Date of manufacture:	mth 02 year 2004 (E)
AC-Adapter:		Origin of manufacture:	China (N)
Precision:	13	Integrated circuits:
Memories:	1
Program steps:		Courtesy of:	Joerg Woerner

Combines the features of the MathMate with the 2-line display of the TI-15 Explorer Elementary Calculator.

Perfect for reinforcing math concepts in all elementary subjects:

• Problem-solving mode lets the student or the calculator create problems and give logical answers.
   Perfect for using with children's stories that have math themes.
   Great for individualized practice of basic facts.
• Durability: Plastic keys are tougher and more tamper-proof than rubber keys.
   An extra window protects the LCD display and the solar cells.
• Enter expressions with a missing number or missing operand using the [?]-Key.
   Also evaluate inequalities to build number sense skills.
• Constant operation key helps students learn to build tables and investigate patterns while developing
   multiplication, division, addition and subtraction skills.
   Use the TI-10 with blocks and other manipulatives to show skip counting by 2's, 5's and more!
• Place value feature helps teachers reinforce place value that is often taught using base ten blocks.
   See how many 1s, 10s, 100s, 1000s, or even 10ths, 100ths are in a specified number.

In 2006 production of both the TI-10 and its siblingTI-15 Explorer was shifted from Nam Tai Electronics an OEM (Original Equipment Manufacturer) for Texas Instruments to Kinpo Electronics, another major OEM in China.

Dismantling this TI-10 manufactured in February 2004 by Nam Tai Electronics in China reveals a clean design centered around an unknown single-chip calculator circuit mounted in Chip-on-Board (COB) technology on a double-sided printed circuit board (PCB) and powered by 4 solar cells and a CR2025 backup battery. Please notice that the TI-10 manufactured by Kinpo is using a larger CR2032 battery. A second PCB is used for the keyboard and connected with a short flat flexible cable (FFC to the Main-PCB. While Nam Tai is using for the keyboard a single-sided phenolic resin PCB, chose Kinpo a more expensive solution based on a double-sided epoxy resin, but could manage to integrate the battery holder, too. We discovered already with the TI-30X IIS completely different designs among the OEMs.

There is obviously no relationship between this TI-10 for grades K-2 and the TI-10 Profit Guide introduced already in 1986.

Stokes Publishing Company, Inc. based in Sunnyvale, California sold a companion for the teacher, view the wonderful TI-10 Overhead Calculator.

Math Explorer ™ and MathMate ™ are trademarks of Texas Instruments.

If you have additions to the above article please email: joerg@datamath.org.