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LCD display for system1/80/80A/80B

Want a LCD Display for your test bench? UseGODI180! 

Many thanks to Thierry for providing the pictures!

System1
System80
System80B

components needed:

  • a HD44780 compatible Display 4 rows, 20 Digits
  • PIC 18F45K22 (plus my Software, see below)
  • a 5K Potentiometer
  • two HCF4532 (8-BIT PRIORITY ENCODER)
  • one HCF4071 ( QUAD OR GATE)


Note: the PIC program MUST to be programmed in High Voltage mode,
which is NOT supported by my PIC programmer.
You may want to purchase a cheap pickit3 clone for that e.g. this one

For the 4x20 LCD display you can use the one from the 'Reichelt shop cart' or any other HD44780 compatible display ( LCD display on Aliexpress )

boot message
strobe scan
system80
system80B