Computer · Microcontrollers
Which of the following is true about Port 0 in the 8051 microcontroller?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Port 0 pins are not programmable
- 2Port 0 is exclusively used for input only
- 3Port 0 cannot be used for output operations
- 4Port 0 can be used for both input and output operations, but requires external pull-up resistors✓
Correct answer
Port 0 can be used for both input and output operations, but requires external pull-up resistors
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