Sharp EL-8: Difference between revisions

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Revision as of 19:39, 15 July 2022

Sharp EL-8
Sharp EL-8.jpg
ManufacturerSharp
Introduced1970
Calculator
Display typeVFD
Display size8 digits
Programming
Other
Serial Numbers1012099

The Sharp EL-8 was an early handheld calculator produced by Sharp.

Special features

Since the calculator uses the Itron font tubes it does not feature leading-zero supression, to help with readability (e.g. it would display '00000001' to display '1').

The calculator uses separate 'minus equals' and 'plus equals' keys, as well as a single key for multiplication and division, this was common for the time period.

Internal design

The calculator uses 3 PCBs internally, one for the logic, one for the display, and another for the power supply, the logic board and display board slotinto a card-edge connector mounted to the keypad assembly, with the power board being connected to the display board via a wired connector.

The calculator uses a reed-switch keypad, Vacuum Fluorescent Displays (8x Itron DG10: and 1x Itron SP-8A), and 9 Integrated Circuits, the Rockwell DC1152, and the NRD2256.

Gallery

  • Powered on

  • Sharp EL-8 internals (Powered on without the display cage).jpg
  • Sharp EL-8 internals (Powered on).jpg
  • Sharp EL-8 internals (Front).jpg
  • Sharp EL-8 internals (Rear 2).jpg
  • Sharp EL-8 internals (Rear).jpg
  • Sharp EL-8 Badge (1012099).jpg
  • Sharp EL-8 Bottom Shell.jpg
  • Sharp EL-8 Display Assembly (Top).jpg
  • Sharp EL-8 Keypad (Top).jpg
  • Sharp EL-8 Keypad (Bottom).jpg
  • Sharp EL-8 Logic Board (Top).jpg
  • Sharp EL-8 Logic Board (Bottom).jpg
  • Sharp EL-8 Power Supply (Top).jpg
  • Sharp EL-8 Power Supply (Bottom) with Battery Bypass Capacitor Mod.jpg

External Resources

  • []

See also

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