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Why was the PC module not designed for USB?

April 26, 2017designed module pc USB

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Why was the PC module not designed for USB?

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At first sight the good old serial RS-232 interface appears to be more complex than a USB connector, but in fact the latter is vastly more complicated in terms of development effort and software connections (i.e. drivers), and we decided against such a development in order to keep costs within limits. In any case, USB – serial adaptors are available cheaply from many suppliers, and can be used with all manner of equipment.