DATAMATH

DATAMATH CALCULATOR MUSEUM

Texas Instruments TI-1104

Date of introduction:	1987	Display technology:	LCD
New price:		Display size:	8
Size:	4.4" x 2.5" x 0.40" 111 x 64 x 10 mm³
Weight:	1.6 ounces, 45 grams	Serial No:
Batteries:	LR43	Date of manufacture:	mth 10 year 1987 (A)
AC-Adapter:		Origin of manufacture:	Taiwan (I)
Precision:	8	Integrated circuits:
Memories:	1
Program steps:		Courtesy of:	Ken H. Meine
		Download manual:	(EU: 0.8M Bytes)

The TI-1104 was introduced in the year 1986 together with TI-1103. Both calculators are based on the TI-1100 II.

Until 1989 a minimum of 15 stylish coloring schemes appeared. Please click on the picture at the right as a switchboard to all known versions of the TI-1103 and TI-1104 family.

We added this rare TI-1104 with its beautiful Magenta color in November 2022 to the Datamath Calculator Museum, more than 20 years after we started to hunt the different versions down. A big Thank You to fellow collector Ken H. Meine to keep his eyes open!

Dismantling this TI-1104 manufactured in October 1987 by Inventec Corporation in Taiwan reveals a clean design centered around an unknown single-chip calculator circuit soldered on a double-sided printed circuit board (PCB) and powered by a small LR43 battery.

Inspecting the PCB of the featured TI-1104 calculator brought our attention to a small mark reading IOTI1103-01A and we started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.

Funny to know that Texas Instruments created yet another design of the TI-1104 and introduced it under the Number Beat label.

If you prefer the AOS system, view the MathMate.

AOS™ is a trademark of Texas Instruments.

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