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DATAMATH CALCULATOR MUSEUM |
Canon Palmtronic LD-8Rs a.k.a. Palmtronic 8Rs
Date of introduction: | October 1976 | Display technology: | Fluorescent |
New price: | Display size: | 8 | |
Size: | 4.6" x 2.7" x 0.55" | ||
Weight: | 2.5 ounces | Serial No: | 522554 |
Batteries: | 2*AAA or NiCd Pack-4 | Date of manufacture: | year 1976 |
AC-Adapter: | AD-2 | Origin of manufacture: | Japan |
Precision: | 8 | Integrated circuits: | TMS1042 |
Memories: | |||
Program steps: | Courtesy of: | Joerg Woerner |
The
Canon Palmtronic 8Rs, also known as LD-8Rs, followed the LD-84
and uses a much smaller housing similar to the LC-8M
with a yellow LC-Display.
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.
Interesting to know that even the Palmtronic 8s and Palmtronic 8Ms
make use of the the TMS1042 calculator chip, despite their different
specifications:
Feature | LD-8s | LD-8Ms | LD-8Rs |
No. of Keys | 20 | 24 | 20 |
Memory | n.a. | [M+], [M-] [RM}, [CM] |
[RM/CM] |
Square root | yes | yes | n.a. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, November 16, 2008. No reprints without written permission.