Canon Palmtronic LD-8Ms a.k.a. Palmtronic 8Ms

Date of introduction:  February 1977 Display technology:  Fluorescent
New price:   Display size:  8
Size:  5.0" x 2.7" x 0.55"  
Weight:  2.8 ounces Serial No:  605809
Batteries:  2*AAA or NiCd Pack-4 Date of manufacture:  year 1977
AC-Adapter:  AD-2 Origin of manufacture:  Japan
Precision:  8  Integrated circuits:  TMS1042
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The Canon Palmtronic 8Ms, also known as LD-8Ms, followed the LD-8M3 and uses a much smaller housing similar to the LC-8M with a yellow LC-Display.

LD-8Ms_PCB.jpg (47639 Byte)The engineers at Canon used some tricks to achieve an overall thickness of only 0.55". The calculator chip, a TMS1042 based on the TMS1000 Microcomputer family, is soldered with bended pins on the printed circuit board and the green VF-Display uses straight pins. 

The Palmtronic 8s used a similar housing but lacks the memory, while the Palmtronic 8Rs squeezes even the memory into a smaller housing.

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Joerg Woerner, November 19, 2002. No reprints without written permission.