Canon Palmtronic LD-8M 3 a.k.a. Palmtronic 8M

Date of introduction:   Display technology:  Fluorescent
New price:   Display size:  8
Size:  5.5" x 3.0" x 0.8"  
Weight:  4.2 ounces Serial No:  505286
Batteries:  2*AA Date of manufacture:  year 1976
AC-Adapter:   Origin of manufacture:  Japan
Precision:  8  Integrated circuits:  TMS1042
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The Canon Palmtronic 8M, also known as LD-8M3, is one of the successors of the LE-series. Compared to the original LE-series using a red LED-Display (Light Emitting Diodes) the later LD-series sports the green VF-Display (Vacuum Fluorescent) and the LC-series either yellow of grey LC-Displays (Liquid-Crystal).

LD8M3_1_PCB.jpg (43606 Byte)Dismantling the Palmtronic 8M is always a small surprise, some use a calculator circuit manufactured by Texas Instruments, others use a NEC circuit. Don't miss the sibbling here.

The final edition of the Palmtronic 8M, called LD-8M 4, uses the Hitachi HD36264 single-chip calculator circuit of the LD-8M 2. 

A minor design variation could be found here.

Don't miss the LE-84 and LC-8M for a direct comparision.

The similar Palmtronic 8 missed the memory, view the LD-84. Later a much smaller calculator appeared with the LD-8Ms.

If you have additions to the above article please email:

Joerg Woerner, January 19, 2003. No reprints without written permission.