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Why is USB so much faster than normal serial communication?

Cactus Blip

Hello,

USB and say, RS-232/485 are all serial mediums to deliver data. What makes USB so much faster? Why can't the same data transfers rate be achieved with say, RS-232? Sorry for asking a non-Keil specific question.

Thanks

Parents
  • 0 in reply to Tamir Michael

    ... DMA which will 'help' equally much regardless of USB or 485. Likewise, regardless of DMA or not, buffer size helps equally for the two. In comparison - compare under same circumstances.

    Erik

    PS
    In my first post I 'forgot' a thing: RS232 is single ended which is not conductive to long cables or high speed.

Reply
  • 0 in reply to Tamir Michael

    ... DMA which will 'help' equally much regardless of USB or 485. Likewise, regardless of DMA or not, buffer size helps equally for the two. In comparison - compare under same circumstances.

    Erik

    PS
    In my first post I 'forgot' a thing: RS232 is single ended which is not conductive to long cables or high speed.

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