This is schematic and source code to control an LCD 16x2 using a 20 pin microcontroller like 89C2051 or AVR AT90S2313. Hardware ports are enhanced by using a Cmos shift register CD4094. Data is transmitted serial to the shiftregister and control LCD

Control a LCD 16x2 panel with 4 ports. This project includes an schematic. The hardware uses a 20 pin microcontroller like the 89C2051 or Atmel 90S2313. The hardware is enhaced using an external shift register CMOS 4094. The source code was written f