DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Canon Palmtronic LD-81
| Date of introduction: | June 1975 | Display technology: | Fluorescent |
| New price: | Display size: | 8 | |
| Size: | 5.1" x 2.9" x 0.8" 130 x 73 x 20 mm3 |
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| Weight: | 3.8 ounces, 108 grams | Serial No: | 250473 |
| Batteries: | 2*AA | Date of manufacture: | year 1976 |
| AC-Adapter: | AD-2 | Origin of manufacture: | Japan |
| Precision: | 8 | Integrated circuits: | Hitachi HD36290 |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner |
The
Canon Palmtronic LD-81 followed the original LD-80 and
introduced a completely new and colorful design. The color-coding of the keys
– black for numbers, blue for functions and yellow for control – together
with the silver keyboard plate and the dark housing gives a fresh and modern
design. Compare it your own with the design style of the LE-84
or the odd LE-80R and LE-81
calculators.
The new Palmtronic design style was slightly
refined with the smaller LD-8Ms and some LC-Display (Liquid Crystal) like the LC-8M.
Even scientific calculators used this design style, don’t miss the F-6
and the later F-71.
The internal electronics
of the LD-81 is based on a
Hitachi HD36290 single-chip calculator circuit. Within some months Texas
Instruments made their comeback and the calculator brain was
changed with the second series of the LD-81
and kept for the similar looking twins LD-83 / LD-84.
Don't miss the identical Panther
8 introduced October, 1975 and the tiny Palmtronic 8
mini.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 12, 2002. No reprints without written permission.