Hi Guys,
I am a bit new to the 8051 microcontroller..i have a basic question to ask. Whenever we are using a pin as a input we have to write a 1 to the i/o register. Now this will make the pin an input and due to the internal pull up resistor this pin will also become high when configured as an input. Now if i wanted to read a high input on this pin how can i do it(without using any gates)???? really confused please help..????
I am a bit new to the 8051 microcontroller..i have a basic question to ask. Whenever we are using a pin as a input we have to write a 1 to the i/o register. Now this will make the pin an input and due to the internal pull up resistor this pin will also become high when configured as an input. Now if i wanted to read a high input on this pin how can i do it(without using any gates)???? really confused please help..????