所需原器件
1 TPYBoard v102 一塊
2 四位數碼管一個
3 杜邦線若干
4 面包板一塊（為了接線方便，可不用）
接線圖
四位數碼管引腳圖
開發板與四位數碼管針腳對應：
程序源代碼:
- import pyb
- from pyb import Pin
-
- #數碼管a~g dp對應的開發板引腳
- d_Pins=[Pin(i,Pin.OUT_PP) for i in ['X1','X2','X3','X4','X5','X6','X7','X8']]
- #數碼管位段1 2 3 4對應的引腳
- w_Pins=[Pin(i,Pin.OUT_PP) for i in ['Y9','Y10','Y11','Y12']]
-
- number={
- '0':
- [0,0,0,0,0,0,1,1],#0
- '1':
- [1,1,1,1,0,0,1,1],#1
- '2':
- [0,0,1,0,0,1,0,1],#2
- '3':
- [0,0,0,0,1,1,0,1],#3
- '4':
- [1,0,0,1,1,0,0,1],#4
- '5':
- [0,1,0,0,1,0,0,1],#5
- '6':
- [0,1,0,0,0,0,0,1],#6
- '7':
- [0,0,0,1,1,1,1,1],#7
- '8':
- [0,0,0,0,0,0,0,1],#8
- '9':
- [0,0,0,0,1,0,0,1],#9
- }
-
- def display(num,dp):
- global number
- count=0
- for pin in d_Pins:#顯示num的值
- pin.value(number[num][count])
- count+=1
- if dp==1:
- d_Pins[7].value(0)
- def clear():
- for i in w_Pins:
- i.value(0)
- for i in d_Pins:
- i.value(1)
- def showData(num):
- #分割出數值的百位、千位、個位和小數位的值
- d_num=num
- location=d_num.find('.')
- if location>0:
- d_num=d_num.replace('.','')
- while len(d_num)<4:
- d_num='0'+d_num
- for i in range(0,4):
- pyb.udelay(2000)
- clear()
- w_Pins[3-i].value(1)
- if i==location-1:
- display(d_num[i],1)
- else:
- display(d_num[i],0)
- if location<0:
- for i in range(0,4):
- pyb.udelay(2000)
- clear()
- w_Pins[3-i].value(1)
- display(d_num[i],0)
- while True:
-
- num='9016'
- showData(num)
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