Architecture USB adapter
die of pl2303hx usb serial bridge controller manufactured prolific technology.
as simplified example typical standard usb serial adapter consists of usb processor chip processes usb signals. usb processor sends processed usb signals serial driver chip applies correct voltages , sends processed data signals serial output. computer able detect , process data signals drivers must installed on computer. when usb serial adapter connected computer via usb port drivers on computer creates virtual com port shows in device manager. virtual com port can accessed , used if built-in serial com port. however, characteristics of virtual com port not same real internal com port, due data latency; means if sensitive , precise data transfer required, usb serial adapter might unreliable , not desired solution. virtual com drivers available windows, linux , mac only.
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