Simple two button control with a Teensy

TeensyTwoButtons.ino

/*
 * TeensyTwoButtons.pde
 *
 * You must select Keyboard from the "Tools > USB Type" menu
 *
 * Download and install the Bounce library: http://www.pjrc.com/teensy/td_libs_Bounce.html
 *
 */

#include <Bounce.h>

Bounce button0 = Bounce(0, 10);
Bounce button1 = Bounce(1, 10);

void setup() {
  pinMode(0, INPUT_PULLUP);
  pinMode(1, INPUT_PULLUP);
}

void loop() {
  button0.update();
  button1.update();

  if (button0.fallingEdge()) {
    Keyboard.print("-");
  }
  if (button1.fallingEdge()) {
    Keyboard.print("+");
  }
}