Jeppesen Sanderson prostar (2nd design) by Texas Instruments

Date of introduction:


Display technology:  LCD
New price:   Display size:  8
Size:  5.8" x 2.8" x 0.85"
 147 x 72 x 22 mm3
Weight:  3.0 ounces, 84 grams Serial No:  5402
Batteries:  2*LR44 Date of manufacture:  year 1986
AC-Adapter:   Origin of manufacture:  Italy
Precision:  11 Integrated circuits:  TP0456/CD4575, CD4576
Memories:  2    
Program steps:   Courtesy of:  Joerg Woerner

In 1985 Texas Instruments stopped the production of the TI-55-II due to the terrible keyboard and introduced the TI-55-III with a reliable far-east style keyboard.

Prostar_IC.jpg (22540 Byte)As a result the original prostar Flight computer was replaced with this 2nd design using the new housing with the old electronics.

This prostar was the last Jeppesen Sanderson Flight computer based on a TI calculator, the Techstar uses an original design. 

Nevertheless got we four exciting products between 1980 and 1986:

Jeppesen Sanderson Flight computer Texas Instruments calculator
avstar (1980) TI-35 (1979)
avstar (1986) TI-35-II (1985)
prostar (1982) TI-55-II (1981)
prostar (1986) TI-55-III (1985)


horizontal rule

If you have additions to the above article please email:

Joerg Woerner, December 12, 2002. No reprints without written permission.