ME3011FP Tut5

Which of the segment coding below declare pushbutton as input in the "Pushbutton" sketch.

/*

Pushbutton sketch

a switch connected to pin 2 lights the LED on pin 13

*/

const int ledPin = 13;

const int inputPin = 2;

void setup() {

pinMode(ledPin, OUTPUT);

pinMode(inputPin, INPUT);

}

void loop(){

• const int ledPin = 13;

• const int inputPin = 2;

• pinMode(ledPin, OUTPUT);

• pinMode(inputPin,INPUT;

Most boards have an LED connected to pin

• 0

• 1

• 12

• 13

A micro-controller pin is said to be "floating" when it is

• connected to 0 volt

• connected to 3 volts

• connected to 5 volts

• not connected to anything

When a switch is pressed and moves from an open to a closed position, the contact often isn't perfect and produces a number of spurious signals called___.

• fake

• false

• bogus

• bounces

The debounce function returns "true" if the switch is pressed or ____________.

• stable

• half close

• not close

• not yet stable

The analogRead function will sees a 5 volts if the value on the pin is.

• 255

• 511

• 767

• 1,023

The Arduino function to detect digital input is

• digitalread

• digitalRead

• digitalwrite

• digitalWrite

The Figure here shows

• switch connected using potentiometer

• switch connected using pull-up resistor

• switch connected using pull-down resistor

• switch wired for use with internal pull-up resistor