10-11-2014, 09:24 AM
Abstracts: There are a lot of ways to transmit data from pc to external hardware, such as serial port, parallel port, a general purpose input/output(GPIO)card and USB(Universal serial bus)port.But among these the usb port has become a popular option,because of it’s ease of use,low cost,isochronous,data bandwidth and availability in most computing system.Microchip’s PIC 18F4550 microcontroller has an embedded USB controller that allows rapid development of USB enabled devices.This paper presents a system for bidirectional communication between a personal computer and an embedded devices using PIC microcontroller in USB bulk transfer mode.