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Sharp EL-808

Date of introduction:  1974 Display technology:  LCD
New price:   Display size:  8
Size:  7.0" x 4.4" x 1.6"    
Weight:  12.8 ounces Serial No:  4526201
Batteries:  4*AA Date of manufacture:  year 1974
AC-Adapter:  EL-81 Origin of manufacture:  Japan
Precision:   Integrated circuits:  NEC uPD224
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

EL-808_1.jpg (28867 Byte)Sharp Electronics Corporation introduced May 15, 1973 with the EL-805 the first calculator using a LCD display.

This EL-808 used the same type of Sharp's unique silver-coloured COS-LCD display in a desktop style calculator. These early COS-LCD's needed always a flap above the display to protect it against ambient light.

EL-808_LCD.jpg (50892 Byte)The simple but robust construction of the EL-808 traces back to the  EL-811 and EL-8102 calculators introduced in 1971 resp. 1974. 

EL-808_PCB.jpg (61028 Byte)Compared with the above mentioned calculators the electronics was greatly reduced and fitted on a small part of the printed circuit board (PCB). The remaining place is occupied by the keyboard.



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

Joerg Woerner, October 23, 2002. No reprints without written permission.