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
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
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:

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.

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Joerg Woerner, August 1, 2023. No reprints without written permission.