Canon Pocketronic II

Date of introduction:  July 1974 Display technology:  
New price:   Display size:  n.a.
Size:  7.9" x 4.0" x 2.0" Printer technology:  Thermal
Weight:  1 pound 9 ounces Serial No:  502877
Batteries:  11*AA Date of manufacture:  year 1974
AC-Adapter:  Canon CH-1 Origin of manufacture:  Japan
Precision:  10 Integrated circuits:  TMS0138, TMS0641
Program steps:   Courtesy of:  Peter Muckermann
    Download manual:   (US: 1.5M Bytes)

The Pocketronic II was the successor of the famous Pocketronic resulting of TI's Cal-Tech project.

The main difference between the calculator is the squeezed electronics, the original three LSI-circuits of the Pocketronic were replaced with a standard calculator chip TMS0138. Instead of the integrated LED drivers a second integrated circuit drives the thermal printer head.

This Pocketronic II still lacks any display, view the competition from Casio sporting an 8-digit LED here.

If you have additions to the above article please email:

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