#3.3.1.7. 예제

from microbit import *

total_pixels = 25

lit_pixels = 0

def update_display(lit_pixels):

for i in range(total_pixels):

x = i % 5

y = i // 5

display.set_pixel(x, y, 9 if i < lit_pixels else 0)

while True:

if button_a.is_pressed():

lit_pixels = min(lit_pixels + 1, total_pixels)

update_display(lit_pixels)

sleep(100)

elif button_b.is_pressed():

lit_pixels = max(lit_pixels - 1, 0)

update_display(lit_pixels)

sleep(100)