Hand-held Calculators

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Casio AL-8 & AL-10

The Casio AL-8 and AL-10 were the first hand-held calculators to accept and display fractions, and could also operate and display in hours, minutes, and seconds.

 

Casio AL-8

Casio AL-8

Display is 8 digits, green fluorescent.

4-function, %, memory, square root, fractions, hours minutes seconds, and Standard Deviation.

3v (2x AA batteries).

80 x 138 x 23 mm (3.1" x 5.4" x 0.9").

1975.

Made in Japan.
AL-8 display

Displaying the fraction 3/4.
Note the slide switch on the right to select the mode, including fractions, hours minutes seconds, and standard deviation.

Casio AL-10
Casio AL-10

Casio AL-10

Display is 10 digits, green fluorescent.

4-function, %, memory, square root, fractions, hours minutes seconds, and Standard Deviation.

3v (2x AA batteries).

80 x 138 x 23 mm (3.1" x 5.4" x 0.9").

1975.

Made in Japan.
AL-10 display

Displaying the fraction
3 7/16.
circuit board

The circuit board of the Casio AL-10, showing the vacuum fluorescent display in a single tube, the chip made by NEC, and the voltage converter on a small board (to produce the driving voltage for the display).

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Hand-held Calculators
Sharp QT-8B
Sanyo ICC-0081 Mini Calculator
Canon Pocketronic
Sharp EL-8 & Facit 1111
Busicom LE-120A & LE-120S
Sanyo ICC-82
Minolta Minolcom
Brother PRO-CAL 408
Bowmar 901B
Ragen Microelectronic
Sharp EL-811 & derivatives
Royal Digital III & IV
Busicom LE-100A handy
Busicom LE-80A handy
Hewlett Packard HP-35
Canon LE-10
Rapidman 800
Texas Instruments 2500
Lloyd's Accumatic 100
Sinclair Executive
Casio Mini
Sanyo ICC-809
Sharp EL-801
Texas Instruments SR-10
Sperry Remington 661D & 661
Olympia CD 81
apf Mark V
Ramsgate M-11
Iain Jones International Mini A
Hewlett-Packard HP80
Heathkit IC-2009
MITS 150
Summit Ko9V, K16 & SE88M
Unicom 102
Victor 85
Elka 101
RFT minirex 75
Sharp EL-120
Sharp EL-805
Bowmar MX-55
Keystone 88 & similar
Hewlett-Packard HP-65
Casio fx-10
Calcu-pen
Casio AL-8 & AL-10
Commodore 776M & 796M
Novus 650
Rockwell 8R
General Instrument EZ3000
Check, billfold, wallet calculators
Edmund Scientific 1945
Texas Instruments Spirit of '76
Pulsar Calculator Watch
Compuchron Calculator Watch
Adler Lady & Sir
Elektronika C3-15
Speech+
Commodore S61
Sharp EL-8026
Texas Instruments TI-30
Canon Multi 8
Casio ST1
Texas Insturments TI 58
Wrist Calculators
Kosmos I & Kosmos Astro
Hanimex Calculator-Recorder
Navigation Calculators
TI58 Special Function Calculators
Sandvik 842S Coromant
Panasonic Electronic Ruler
Teal Photon
Sharp EL-825
Casio Mini Card LC-78
Feet & inches calculators
Elektronika MK-33
Sharp PC1211/Tandy TRS80 PC1
Curta
Slide Rule
Otis King L

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© Text & photographs copyright Nigel Tout  2000-2008 except where noted otherwise.