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Old calculators
Timeline
- Calculator evolution 1970-1976 (base functions); 1972-1980
(scientific, finance and programmable models)
The
beginning
- Portable calculators built by Canon, Texas Instruments, Toshiba in the
'71/73 time frame
Basic
LED calculators - Old basic calculators with the
red light emitting diodes (LED) display technology
Heavy-weight
calculators - First generation of big and heavy
portable computers, not really pocketable
Fluo
calculators
- Basic calculators with green fluorescent-tubes display technology
Slide rules
and addiators - The portable hand held calculators sold
before the electronic revolution
Species
evolution
Scientific
calculators - Calculators for engineers and
students. The digital calculators killed the slide rulers
Special
calculators -
Counting, mesure-converting calculators, featuring also
astrological and biorytm calculation
Clock calculators
- Calculator
make easier to wake up in the morning and also calculate times or
the day of the week
Solar calculators-
After years of battery troubles, no more battery are needed to run
calculators. Look at
the earlier solar calculators
Printing calculators-
From the big 'blind' Pocketronic printing calculator to the small
modern calculators with thermal print head.
Best
calculator brand
Canon calculators
- Modern light
calculator design from the pioneer of the portable
calculator industry
Casio
calculators -
Look at the side keys
desing from the inventor of multi-function calculators
Hewlett-Packard
calculators
- The famous programmable scientific calculators built by the american vendor
Sharp Calculators -
From the world first LCD calculator to the light and thin
calculators, using LCD and button battery
Texas
Instruments -
A lot of Texas best LED scientific and programmable calculators
built in the '70s.
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