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Casio fx-10

Date of introduction:  May 1974 Display technology:  Fluorescent
New price:  $99.95 Display size:  6
Size:  5.9" x 3.7" x 1.25"
 150 x 95 x 32 mm3
   
Weight:  8.0 ounces, 228 grams Serial No:  6179316, 2253042
Batteries:  4*AA Date of manufacture:  mth 08 year 1974
AC-Adapter:   Origin of manufacture:  Japan
Precision:  12  Integrated circuits:  NEC uPD 179C, NEC uPD175C,
 Toshiba T3184
Memories:      
Program steps:   Courtesy of:  Joerg Woerner

Casio Computer Co., Ltd introduced its first scientific handheld calculator fx-10 in May 1974, almost 2 years after the Mini CM-601.

Casio named the fx-10 according to its set of ten scientific functions, even in May 1974 rather disappointing. Please notice that it sports the trigonometric functions sine, cosine and tangent but misses its inverses. Compare the fx-10 with the SR-50 introduced in January 1974 and other scientific calculators available in 1974, e.g. Canon F-7, Corvus Model 500 and Hewlett Packard HP-35.  

Dismantling this Casio fx-10 manufactured in August 1974 reveals a clean design centered around a NEC uPD175C/uPD179C two-chip calculator circuit and a Toshiba T3184 display driver circuit.

 

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If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, March 18, 2012. No reprints without written permission.