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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:

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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

TI-30STAT_RCI2792_PCB.jpg (228097 Byte)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.

TI-30STAT_RCI2792_IC.jpg (98592 Byte)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


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

Joerg Woerner, October 8, 2008. No reprints without written permission.