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
|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|
|Program steps:||Courtesy of:||Joerg Woerner|
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
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
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, December 12, 2002. No reprints without written permission.