DATAMATH

DATAMATH CALCULATOR MUSEUM

Texas Instruments TI-30 STAT

Date of introduction:	1992	Display technology:	LCD
New price:		Display size:	8 (5 + 2)
Size:	5.4" x 2.8" x 0.45"
Weight:	2.4 ounces	Serial No:
Batteries:	2*LR44	Date of manufacture:	wk 27 year 1992
AC-Adapter:		Origin of manufacture:	Italy
Precision:	11	Integrated circuits:	CD4557A
Memories:	1
Program steps:		Courtesy of:	Joerg Woerner
		Download manual:	(US: 4.9 MByte)

Just a minor variation of the 1989-model of the TI-30 STAT. Please focus on the texture of the housing if you compare the designs.

In 10 years of production we recognized in the meantime seven different designs of the TI-30 STAT and - just to compare - four designs of the related TI-30:

Thumb nail
Year	1985	1987	1987 (?)	1988	1989	1990	1992
Origin	Italy	Italy	Italy	Italy	Italy	Italy	Italy
Date code	wk 48 yr 1985	wk 31 yr 1987	wk 47 yr 1988	wk 34 yr 1988	wk 15 yr 1989	wk 51 yr 1991	wk 37 yr 1992
Display bezel	Type 1	Type 1	Type 1	Type 1	Type 2	Type 2	Type 2

Dismantling this late TI-30 STAT reveals an interesting internal construction with a flexible printed circuit board (Flex-PCB) instead of the common rigid PCB's of other calculators manufactured in the 90s. We know this type of design from e.g. the TI-30 III manufactured in 1985.

The single-chip calculator circuit located in this late TI-30 STAT looks uncommon but sports a well known designator: CD4557A - a member of the TP0456 architecture, based on the famous TMS1000 Microcomputer family.

Don't miss a BA-35 Business Analyst manufactured in 1996 sporting a CD4571B, probably the latest TP0456 chip.

In 1993 this successful calculator was discontinued. Texas Instruments introduced a complete new family in a smoother housing:

• TI-30X New display with 10 + 2 digits, 3 memories
• TI-30X SOLAR With Anylite solar-cells
• TI-35X Adds 2-dim statistics and hex-calculations
• TI-36X SOLAR With Anylite solar-cells

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