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Which of the ports act as the 16 bit address lines for transferring data through it?

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in Microcontroller by (14.6k points)
Which of the ports act as the 16 bit address lines for transferring data through it?

(a) PORT 0 and PORT 1

(b) PORT 1 and PORT 2

(c) PORT 0 and PORT 2

(d) PORT 1 and PORT 3

I have been asked this question in semester exam.

My question is from I/O Port Programming and Addressing Modes in chapter 8051 Microcontroller of Microcontroller

1 Answer

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by (24.2k points)
Right answer is (c) PORT 0 and PORT 2

Best explanation: PORT 0 and PORT 2 are used as the 16 bit address lines where PORT0 act as lower bit address lines and PORT 2 as higher bit address lines.

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