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Which of the following have an asynchronous data transmission?(a) SPI(b) RS232(c) Parallel port(d) I2CThe question was posed to me during an online interview.Query is from RS232 in division Basic Peripherals of Embedded Systems |
Answer» CORRECT choice is (b) RS232 Easy EXPLANATION: The data is transmitted ASYNCHRONOUSLY in RS232 which enhance LONG distance COMMUNICATION, whereas SPI, I2C offers short distance communication, and therefore, they are using synchronous data transmission. |
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