Casio AL-8S Electronic Calculator

Date of introduction:  1976 Display technology:  Fluorescent
New price:   Display size:  8
Size:  5.6" x 3.2" x 0.9"
 142 x 82 x 22 mm3
Weight:  4.6 ounces, 130 grams Serial No:  4312372
Batteries:  2*AA Date of manufacture:  year 1976
AC-Adapter:  AD-2S Origin of manufacture:  Japan
Precision:  8  Integrated circuits:  Hitachi HD36133
Program steps:   Courtesy of:  Joerg Woerner

This Casio AL-8S introduced in 1976 followed the AL-8, the first hand-held calculator operating and displaying fractions. The not very intuitive approach with a [P] key for six pre-programmed functions accessible through a larger slider switch called "Function Mode Selector" was replaced with dedicated [a b/c], [SQR], [GT] and [DATE] keys. Unfortunately lost the AL-8S with these changes its unique time / angle statistical calculations.

Dismantling this Casio AL-8S calculator manufactured in 1976 reveals a design centered around a Hitachi HD36133 single-chip calculator circuit while its predecessor AL-8 and sibling AL-10 used a NEC uPD573C part.

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Joerg Woerner, May 15, 2011. No reprints without written permission.