Windows logo using Python Turtle...
*Source code*
from turtle import *
speed(1)
bgcolor('black')
penup()
goto(-50,60)
pendown()
color('blue')
begin_fill()
goto (100,100)
goto (100,-100)
#Draw windows
goto(-50,-60)
goto(-50,60)
end_fill()
color('black')
goto(15,100)
#cut 2 equal parts
color('black')
width(10)
goto (15,-100)
penup()
goto(100,0)
pendown()
goto(-100,0)
done()