DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-1000 (gold)
Date of introduction: | June 1977 | Display technology: | LED-stick |
New price: | $9.77, £6.95 | Display size: | 8 |
Size: | 5.4" x 2.8" x
1.3" 138 x 72 x 32 mm3 |
||
Weight: | 3.0 ounces, 84 grams | Serial No: | |
Batteries: | 9V | Date of manufacture: | wk 38 year 1977 |
AC-Adapter: | AC9180 | Origin of manufacture: | USA (LTA) |
Precision: | 8 | Integrated circuits: | TMC1991 |
Memories: | |||
Program steps: | Courtesy of: | Joerg Woerner | |
Download manual: | (US: 0.8M Bytes) |
The stylish TI-1000 series was introduced 1977 together with the TI-1025 and TI-1050 as a cheaper alternative to the upcoming LCD-calculators. If someone counts generations on the early TI-calculators, this one is from the third generation:
• 1st generation: The famous Datamath alias
TI-2500 • 2nd generation: The TI-1200 line • 3rd generation: The TI-1000 line |
Within one or two years after introduction of the TI-1000 the end of LED calculators was reached. Modern LCD-calculators outdated them due to their long battery life and thinner shape. Compare this LED calculator with the first TI LCD calculator, the TI-1750.
Dismantling
this TI-1000 manufactured in September 1977 in Lubbock, TX reveals an internal
design very similar to the TI-30
introduced in 1976. The main electronics of the calculator fits on a small
printed circuit board (PCB), while the keyboard assembly and battery are
connected with a few wires to the PCB.
This
early TI-1000 is centered around a TMC1991
single-chip calculator circuit, a close relative to the TMC0970 used with the
TI-1200 but highly optimized for cost savings of electronic calculators and
educational products like the Little
Professor.
Please note that later models of the TI-1000
feature a
silver trim
around the keyboard instead the earlier golden design. More - and surprising - differences could be
found inside the two TI-1000 calculators.
Calculators with different nameplates were sold from Western Auto as Citation.
Don't miss the educational game "Spass mit Zahlen" based on the TI-1000.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, January 4, 2002. No reprints without written permission.