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Goulds Pumpulator by Texas Instruments

Date of introduction:	1980	Display technology:	LED-stick
New price:		Display size:	8 (5 + 2)
Size:	5.8" x 3.2" x 1.4"
Weight:	5.3 ounces	Serial No:	2378392
Batteries:	9V	Date of manufacture:	wk 51 year 1980
AC-Adapter:		Origin of manufacture:	USA
Precision:	11	Integrated circuits:	TMC0980 (CD9801)
Memories:	1
Program steps:		Courtesy of:	Joerg Woerner

The Goulds Pumpulator was one of the early customized calculators produced by Texas Instruments. Basically this calculator represents a Business Analyst-I but was changed with a custom designed program memory to do be used as a pump calculator for use with the english system of measurement. A similar approach was later realized by Jeppesen Sanderson with their Flight Computers, e.g. the Avstar.

Dennis Belillo gave me some hints about the functions and keys of this mystery calculator. If you know more about the calculator or own a manual, please contact me.

	psi = pounds/inch squared 1 psi = 70.3089 grams/cm. squared
	atmospheric pressure is +/- 15 psi at sea level
	hp i understand that there is a measure of work called the metric horse power.
	1 horse power (as God intended them to be) = 1.0143 horse power metric
	and 1 hp = 632,800 calorie,grams/hour
	gpm = gallons / min therefore 1 gpm = 3.7853 liters per minute

Simply by comparing the designation of the integrated circuits of the entry line "Majestic" calculators, you'll get the all members of this family:

	TMC0980 Goulds Pumpulator uses a custom design ROM (CD9801)
	TMC0981 TI-30 and SR-40
	TMC0982 Business Analyst and TI-41
	TMC0983 Programmer
	TMC0984 TI-33

Digging deeper into the TMC098x calculator chips you'll locate an OEM-chip used on a TI-30 "clone" manufactured in Hong Kong:

TMC0985 Amelia Scientific 2001

With the introduction of the TI-58 Texas Instruments created the Solid State Software Modules™ to customize calculators. Have a look onto the insurance fee calculators from Agrippina, Allianz, Lloyd, LVM, Nordstern or Victoria.

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