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What is the protocol used by USART?(a) RS232(b) RS232C(c) RS485(d) RS422This question was addressed to me during an interview.This interesting question is from USART Protocol in section Internet Principles of IOT

Answer»

Right choice is (b) RS232C

For explanation: RS232C is a long established standard (“C” is the current version) that DESCRIBES the physical interface and protocol for relatively LOW speed serial data COMMUNICATION between computers and relates devices.



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