8051 MICROCONTROLLER
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Port 0
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Port 3
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Port 2
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Port 1
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Detailed explanation-1: -Pins 10 to 17 form the PORT 3 pins of the 8051 Microcontroller. PORT 3 also acts as a bidirectional Input / Output PORT with internal pull-ups . Additionally, all the PORT 3 Pins have special functions multifunctional for the 8051 microcontrollers.
Detailed explanation-2: -The 8051 multiplexes address and data through port 0 to save pins.
Detailed explanation-3: -Use : Port 3 is a multifunctional port it can be used as simple input / output port. The port 3 pins have three special functions.
Detailed explanation-4: -Port 3 (Pins 10 through 17) This port provides some extremely important signals. P3. 0 and P3. 1 are RxD (Receiver) and TxD (Transmitter) respectively and are collectively used for Serial Communication.