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It permits simultaneous use of multiple USB Serial protocols.
PL-2303 Series (USB-to-Serial) Product Selection Guide
Test program for serial port of PXA270 based board
serial memory rom for for atmel at89c52 or At89s52
controller RS232 for receiving serial data at different speeds
Show Name, Model, Firmware, Graph Space Disk, Serial Number
this java code is used for serial port communication
Universal Serial Bus Mass Storage Class Compliance Test Specification
资料->【B】电子技术->【B5】通信技术->【1】通信协议->【USB、OTG】->Universal Serial Bus Device Class Definition For Audio Devices.pdf