DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Hanimex SLC 891 a.k.a Electronic Memo Note 30
| Date of introduction: | 1980 | Display technology: | LCD (yellow) |
| New price: | Display size: | 8 | |
| Size: | 4.8" x 2.6" x 0.35" 122 x 66 x 9 mm3 |
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| Weight: | 2.3 ounces, 66 grams | Serial No: | 3423592 |
| Batteries: | 3*LR44 | Date of manufacture: | year 1980 |
| AC-Adapter: | Origin of manufacture: | Taiwan | |
| Precision: | 8 | Integrated circuits: | Toshiba T3690, T3691 |
| Memories: | 30 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
Toshiba
introduced with the LC-836MN the first portable electronic Databank on the
market. Competitor Canon followed soon and designed with the
LC-MEMO a similar
device in a much smaller housing. This Hanimex SLC 891, also known as Electronic
Memo Note 30 or Technico MC-3001 combined the electronics of the original
Toshiba design with the sleek housing from Canon.
Dismantling
this Hanimex SLC 891 manufactured in Taiwan in 1980 reveals indeed an early
chipset manufactured by Toshiba, Japan.The T3690 microcontroller scans the
keyboard, drives the display and does the calculating functions. The T3691
stores a maximum of 30 information items in units of 6 alphabetical characters
and 8 numerals each. If you add the bits together you end with a total amount of
2048 bits or 256 bytes.
The alphanumeric
display uses an unusual 8-segment layout with one additional segment to the standard
calculator layout. The display on the right reads "GERMAN".
It is obvious that the additional segment enhances readability of the letter
"M" compared to the LC-836MN.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, June 17, 2017. No reprints without written permission.