#4.2.1.3. 예제

from microbit import *

def set_rgb_color(green, blue, red):

    pin0.write_analog(green) # 초록색

    pin1.write_analog(blue)  # 파란색

    pin2.write_analog(red)   # 빨간색

def display_countdown(seconds):

    for i in range(seconds, 0, -1):

        display.show(str(i))

        sleep(1000)

while True:

    set_rgb_color(1023, 0, 0) # 초록색

    display_countdown(7)

    set_rgb_color(1023, 0, 1023) # 노란색

    display_countdown(3)

    set_rgb_color(0, 0, 1023) # 빨간색

    display_countdown(5)