M.N.  Islam, H.  Akhter, 
    Study and Development of PIC Microcontroller-to-PC Communication via USB,
    International Journal of System Signal Control and Engineering Application,
    Volume 13,Issue 3,
    2020,
    Pages 75-78,
    ISSN 1997-5422,
    ijssceapp.2020.75.78,
    (https://makhillpublications.co/view-article.php?doi=ijssceapp.2020.75.78)
    Abstract: In this study, researchers attempt to describe a
study and development of PIC microcontroller-to-PC
communication via USB. The microchip FSUSB
framework utilized the PIC18F4553 with 20 MHz crystal.
Port B pin RB4 has been used as bootloader and RD0 and
RD1 as the status indicator. Moreover, RC5 and RC4 of
PortC have been used as USB D+ and D-. Firmware tools
consist of MPLAB IDE, MPLAB C18 compiler, driver,
FSUSB framework V2.6 and Microsoft Visual Stadio
(Visual C/C Sharp). Demonstration and Development of
a complete USB2.0 communication solution has been
verified by using USB Device-CDC-BASICDEMO
Software on Proteus 7.7 Simulation platform.
    Keywords: MPLAB C18 compiler;MPLAB IDE;FSUSB framework;PIC microcontroller;USB
communication;bootloader