DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
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: | mth 01 year 1974 |
| AC-Adapter: | EL-81 | Origin of manufacture: | Japan |
| Precision: | Integrated circuits: | NEC uPD224 | |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
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-colored 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.
The
simple but robust construction of the EL-808 traces back to the EL-811
and EL-8102 calculators introduced in 1971 resp.
1974.
Learn how to decipher the
4526201
Date code hidden in the
serial number of the pictured calculator.
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.