Canon Palmtronic LD-8M 4 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:  431304
Batteries:  2*AA Date of manufacture:  mth 02 year 1976
AC-Adapter:   Origin of manufacture:  Japan
Precision:  8  Integrated circuits:  Hitachi HD36264
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The Canon Palmtronic 8M, also known as LD-8M 4, 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). The predecessor called LD-8M 3 sports the same functionality in a housing with a different design.

LD-8M4_PCB.jpg (44450 Byte)Dismantling a Palmtronic 8M is always a small surprise, some use a calculator circuit manufactured by NEC company, others use a Texas Instruments or Hitachi circuit.

This LD-8M 4, manufactured early in 1976, uses again the Hitachi HD36264 single-chip calculator circuit known from the previous LD-8M 2.

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