USB Analogue Converter
This circuit is based on the PIC16C765, a recent addition to the large Microchip PIC family. It can be used to measure two analogue voltages (0–5 V) via two analogue inputs and send the results to a PC via a USB connection. There are also four digital outputs whose levels can be set using the PC.Due to its ease of use, applications for the USB interface continue to proliferate. This time we present a USB analogue converter that has two A/D inputs that can be used to sample analogue voltages (ranging from 0 to 5 V), as well as four digital outputs to which data can be written.This circuit is based on the Microchip PIC16C765 microcontroller, whose pinout is shown in Figure 1.