Bowmar 901B as Craig Model 4501

Date of introduction:  September 1971 Display technology:  LED-stick
New price:  $239.95 Display size:  8
Size:  5.2" x 3.1" x 1.5"
 133 x 78 x 37 mm3
Weight:  10.9 ounces, 310 grams Serial No:  226055
Batteries:  6*AA NiCd Date of manufacture:  wk 12 year 1973
AC-Adapter:   Origin of manufacture:  USA
Precision:  8 Integrated circuits:  TMS0103
Program steps:   Courtesy of:  Joerg Woerner

C4501_02.jpg (19797 Byte)The Bowmar 901B, here with the OEM-label of Craig Cooperation Machines was the first "True-Pocket-Size" calculator based on components of the Texas Instruments company. 

C4501_01.jpg (66267 Byte)This calculator uses both the original Klixon™ keypad and the TMS0103 Integrated circuit. There is no doubt that the display was manufactured by Bowmar, known as LED manufacturer.

This calculator was sold under different labels, beside this Craig 4501 it was popular as Commodore C110, too.

Don't miss the later Craig 4510 manufactured by a Japanese company, but nevertheless "very Texas Instruments".

Klixon™ is a trademark of Texas Instruments.

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© Joerg Woerner, December 5, 2001. No reprints without written permission.