DATAMATH

DATAMATH CALCULATOR MUSEUM

Jeppesen Sanderson avstar by Texas Instruments

Date of introduction:	1980	Display technology:	LCD
New price:		Display size:	8
Size:	5.1" x 2.8" x 0.28"
Weight:	3.0 ounces	Serial No:	0905391
Batteries:	2*LR44	Date of manufacture:	wk 22 year 1980
AC-Adapter:		Origin of manufacture:	USA
Precision:	11	Integrated circuits:	TP0328
Memories:	1
Program steps:		Courtesy of:	Joerg Woerner

This Jeppesen Sanderson avstar gives you an example of using existing products like the TI-35 for other purposes. We know similar approaches from the insurance business (view the TI-58 manufactured for Lloyd) but this one uses a specialized integrated circuit to do some calculations and conversions:

	Pressure, Density Altitude
	Calibrated, True Airspeed
	Wind Speed, Direction, Course and Heading
	Time-Speed-Distance, Distance and fuel consumption
	Convert between US and SI-units

An identical product was sold under the label of Cessna. Compare it here.

The housing of the avstar was later changed, view the enhanced avstar here and read more details about functions. Between these changes an enhanced product was sold as prostar.

Later Flight computers sold by Jeppesen Sanderson like the Techstar based on a non-TI design.

If we trace back in the history of electronic flight computers we discover: The Commodore N60, the Heathkit OCW-1401 and the navtronic 16 resp. 1701t models. All were introduced in the year 1978, two years before this Jeppesen Sanderson avstar appeared.

Compare this flight computer with the advanced USMC HARRIER calculator.

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