Early LED calculators

 

name

built

display

functions

circuit

alim

description

status

Canon Palmtronic LE-80R 73, made in Japan LED bar 8+1 digits 4 op + sqr + k switch TMS0126NC, 6400, 6401, 6402 4x AA Gauge for battery level monitor Very good, working
Anita 811 Sept 73, made by Sumlock Comptometer ltd (UK) LED bar 8+1 digits 4 op  + % + mem Rockwell 15350pB, 17 trans (LED driver) + 3 trans (alim) 3x AA batt or accum, ext 3 pin connector (-batt, +ext, +batt) Well designed with plastic case and metal sliding jacket Very good, working
Adler 81 nd, Made in England LED bar 8+1 digits 4 op + % + mem Rockwell 15350pB, 17 trans (LED driver) + 3 trans (alim) 3x AA batt or accum, ext 3 pin connector (-batt, +ext, +batt) As the Anita 811 Very good, working
Inno Hit K-10LS 73, made in Japan LED bar 10+2 digits 4 op TMS0106NC SN75492, 2x SN75491, 11 trans 6x AA or ni-cd, ext plug 9V (- centre) nice metal case calculator Very Good, display segment damaged
Singer Friden 123 73 LED bar 8+1 digits 4 op TMS0103NC, SN75491, SN75492, 1 trans 4x type N batt, ext 6V jack 3,3 mm (+ centre) Small and nice Very good, working
Kessel P408 74, made in Germany LED bar with lens 8 digits 4 op +  % + (D?) + double zero key TMS0128NC, 2x75492N, 1 trans 5x AA, ext jack 2,5mm (+ centre) dual color case  Good, working. With bag
Interton Electronic PC2008 73, made in Germany LED bar 8+1 digits 4op + K TMR012, 2xSN75491, 1xCA3082, 5 trans 4x AA, ext 2,5mm jack (+ centre) Show non significant zeros, no overflow, rolling number for divide by zero Good, working. With bag
Litton Monroe 20 USA LED bar 8 digits 4 op 1 IC nd + trans internal 6x ni-cd, ext 3 pin proprietary plug Show non significant zeros, no overflow, rolling number for divide by zero Good, working. With bag and charger

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