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Which are the serial ports of the IBM PC?(a) COM1(b) COM4 and COM1(c) COM1 and COM2(d) COM3The question was asked in an online quiz.Question is taken from RS232 topic in division Basic Peripherals of Embedded Systems

Answer»

Right option is (c) COM1 and COM2

Explanation: The IBM PC has one or two serial PORTS called the COM1 and the COM2, which are USED for the DATA transmission between the PC and many other peripheral units LIKE a printer, MODEM etc.



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