DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
MicroManager by Texas Instruments
| Date of introduction: | November 1981 | Display technology: | LCD |
| New price: | $50.00 (SRP 1982) | Display size: | 8 |
| Size: | 5.3" x 2.9" x
0.35" 134 x 74 x 9 mm3 |
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| Weight: | 2.9 ounces, 82 grams | Serial No: | 4195109 |
| Batteries: | 2*LR43 | Date of manufacture: | wk 48 year 1981 |
| AC-Adapter: | Origin of manufacture: | USA (ATA) | |
| Precision: | n.a. | Integrated circuits: | TP0456/CD4566 |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manual: | 
(US: 21.0M Bytes)
(US: 1.2M Bytes) |
Micro
Cooking Aides, Inc. of Lubbock, TX introduced in 1981 with this MicroManager an
innovative tool to take the guesswork out of microwave cooking. By simply
entering the food category and the food weight with the touch-sensitive,
spill-proof keyboard it calculates in a fraction of a second automatically:
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Cooking defrosting or reheating time • Correct microwave oven power level • Necessary required standing time |
The
sales box of the MicroManager includes not only a 100+ pages "Microwave Cooking
Aid Guidebook" but various Quick Reference Cards, an attractive holder with
magnetic backing for mounting on an oven or wall surface and labels for an Oven
Power Settings card matching products sold by Magic Chef, Kenmore, Panasonic,
Whirlpool, and others.
Dismantling this MicroManager with
Date code ATA 4881 and manufactured in
November 1981 in Abilene, Texas reveals an internal construction identical to
Texas Instruments' second generation slimline scientific calculators like the
TI-35 or the
TI-1890 Converter calculator introduced in 1981, too. Mai
differences are the programming of the single-chip calculator circuit and layout
of the LC Display. Even the 40 keys of the MicroManager are identical with the
standard calculators and only covered with an easy to clean plastic foil.
The electronics of the MicroManager is centered around a
TP0456 circuit with a CustomDesign 4566 marking, a close sibling of the CD4559
device used with the TI-1890 Converter or the CD4565 of the
TI-30-II.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, August 1, 2023. No reprints without written permission.