What is the difference between input and output pins?
In the Arduino, you configure whether a pin is an input or output using the pinMode() function. An output pin provides VDD or 0 V, by making a connection to VDD or ground via a transistor. An input pin can be read using the digitalRead() function.
What instruction is used to declare a pin to be input or output?
The pinMode() function is used to configure a specific pin to behave either as an input or an output. It is possible to enable the internal pull-up resistors with the mode INPUT_PULLUP. Additionally, the INPUT mode explicitly disables the internal pull-ups.
What is used to input a PIN?
The chip and pin reader works by inserting a bank/credit card into a slot and then entering a PIN (personal identification number).
Is a device used to input pin?
How are pins declared as input or output?
As you already know pinMode function is used to declare I/O pins either as input or output. pinmMode function accepts two argument one is for pin number and other is either to declare pin as input or output. For example this function pinMode in this line will declare the pin number two as a digital input
Can a port 2 pin be used as an input?
The pins P2.6 and P2.7 of Port 2 are also used for connecting the 32Khz crystal oscillator, So if you are using an external crystal, pins P2.6 and P2.7 will become unavailable and you cannot use them as a digital input or output. So now lets see how to use GPIOs or general purpose input outputs pins of MSP430G2 launch pad.
Can a Arduino input pin damage its own output pin?
The Arduino input pins cannot damage its own output pins. Here is why: All the numbers you need are in the “DC Characteristics” section of the chip data sheet, with 28.1 “Absolute Maximum Ratings” being what everyone should pay attention to. Any pin can be damaged if you put an excessively high or low voltage on it. From 28.1:
Which is the first argument to the pinMode function?
First argument to the pinMode function is a pin number to which we want to declare as a digital output and second argument is type either OUTPUT or INPUT. Because same function is used to declare I/O pins as a output or input.