21-06-2011, 02:17 PM
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1.2 Brief Description of Project
Is the removal of serial port in new PC’s for your existing serial based embedded applications and instruments “causing you headache “?
Then USB to Serial Converter is just the medicine you must use.
The USB to RS-232 Serial Adapter provides an external plug & play RS-232 serial connection with your computer, letting you free up your existing serial port. Users have the capability to utilize the adapter with serial port interface in an easy-to-use environment.
The Device Driver software causes the PC to treat the USB to RS232 converter as if it were an actual RS232 serial port installed on the motherboard of the computer. Although USB stands for "Universal Serial Bus", the USB interface does not work anything at all like a standard RS232 serial port. Like RS232 serial ports, the USB ports on a PC are designed for interfacing external devices, however any device that is designed to connect to a USB port must come with " Device Driver " that essentially informs the operating system when the device is connected or disconnected to the PC and also provides a software interface to the device. A Device Driver is basically a small software program that provides a standard software interface to a particular hardware device. What this means is that practically any device could be designed to connect to a USB port as long as the device is supplied with a driver. The only problem with the USB interface design is that there is no way to simply open up a USB port and communicate with any device the same way that you can with a RS232 serial port. Any software that communicates with a particular USB device must communicate with the device through the driver that is supplied with the USB device. Fortunately, in the case of USB to RS232 converters, the drivers that come with them all emulate a standard RS232 communications port so you can use the USB to RS232 converters to communicate with any RS232 serial device using any standard serial communications
