Hello friends! In the previous lesson, we discussed microcontroller basics . Today, we will apply those ideas to a PIC18F452 and identify everything needed to make a simple program run on real hardware. We will use the 40-pin PDIP version of the PIC18F452, matching the original circuit in this tutorial. Our first output is an LED on RD0. Before writing the application, we will work through power, reset, the external clock, programming connections and the distinction between the IDE and compiler. The original lesson used older MPLAB tools and a socket-style programming workflow. Those are useful historical references, but a supported in-circuit programmer can program the PIC while it remains in the target circuit. The exact combination of device, programmer and software must be checked befo ...