Windows Std Serial Comm Lib for PowerBASIC - Version 5.1 MarshallSoft PowerBASIC serial communications component library for RS232 and multi-drop RS485 and RS422 serial ports. Use WSC4PB to write applications to access data from serial devices such as barcode scanners, modems, lab instruments, medical devices, USB serial devices, scales, GPS navigation, fingerprint scanner, printer servers, etc.Features of WSC4PB include: - Supports 256 ports. Can control multiple ports simultaneously.- Fully thread safe, port re-entrant, modem control, serial line status and control, ANSI emulation, ASCII/XMODEM/YMODEM. - Uses the standard Windows API to communicate with any device connected to a serial port. - Supports virtual serial ports (USB to serial converter, Bluetooth serial). - State driven Xmodem and Ymodem on multiple ports simultaneously (up to 256 connections). - Can send Windows messages on completion of events (incoming character, etc.).