DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-58C IMCO MudMod
|Date of introduction:||1982||Display technology:||LED-stick|
|New price:||Display size:||10 (8 + 2)|
|Size:|| 6.4" x 3.2" x
162 x 81 x 37 mm3
|Weight:||8.5 ounces, 240 grams||Serial No:||1046453|
|Batteries:||BP1A||Date of manufacture:||wk 07 year 1981|
|AC-Adapter:||AC9131||Origin of manufacture:||USA (ATA)|
|Precision:||13||Integrated circuits:|| TMC0501E,
TMC0573, TMC0591, Toshiba TC5047AP
|Program steps:||480-0||Courtesy of:||Joerg Woerner|
|Download manual:||(US: 8.9M Bytes)|
innovative TI-58C was the perfect base for a lot of
customized calculators. The idea behind these products
was the novelty of the
Solid State Software Modules™ with up to 5000 program steps.
The IMCO "MudMod" application was developed in 1982 by IMCO Services, a division of Halliburton Co., Houston for internal use only. IMCO's first module ("DrilMod") with applications in the areas of well control, annular and bit hydraulics, directional design, d-exponents, cost/ft, and drilling mud, a total of 16 programs in all, and second module (“BossMod”) for well-control operations were sold to customers.
Don't miss the Optimum Mud Hydraulics application, developed later in 1979 by Magnet Cove Barium Corporation - better known as Magcobar.
We know five different approaches of the module expansion:
• Standard modules like the Master Library use only the small sticker
above the A,B,C,D, and E keys.
• Other modules like the Pool Water Analysis developed by Olin Corporation
make use of a colorful keyboard mask.
• Customized calculators like the USMC AV-8C calculator or insurance calculators
sold by Allianz and others use special keyboard arrangements.
• The CAL-Q-TAX calculator uses an extender instead the usual drop-in modules.
• The Kodak Q-700 Program Adapter makes use of a snap-on cover with
an individualized printing.
Information about the DrilMod, BossMod and MudMod applications
provided by Mario Zamora. Thanks!
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, AApril 3, 2021. No reprints without written permission.