七段数码管绘制,以数码管的形式显示当前系统时间。

这里提供一种使用Python语言和Tkinter库绘制七段数码管并显示当前系统时间的方法：

import tkinter as tk
import time

# 定义七段数码管的显示字符
digits = {
    "0": ("1111110", "0110000", "1101101", "1000010", "1000010", "1101101", "0110000"),
    "1": ("0010000", "0010000", "0010000", "0010000", "0010000", "0010000", "0010000"),
    "2": ("1111110", "0000010", "1101101", "1101101", "0110000", "1101101", "1111110"),
    "3": ("1111110", "0000010", "1101101", "1101101", "0000010", "1101101", "1111110"),
    "4": ("1000010", "1000010", "1000010", "1111110", "0000010", "0000010", "0000010"),
    "5": ("1111110", "1000000", "1111110", "0000010", "0000010", "1101101", "1111110"),
    "6": ("1111110", "1000000", "1111110", "1000010", "1000010", "1101101", "1111110"),
    "7": ("1111110", "0000010", "0000010", "0000010", "0000010", "0000010", "0000010"),
    "8": ("1111110", "1000010", "1111110", "1000010", "1000010", "1101101", "1111110"),
    "9": ("1111110", "1000010", "1111110", "0000010", "0000010", "1101101", "1111110")
}

# 定义七段数码管的颜色
colors = {
    "0": "red",
    "1": "white"
}

# 获取当前系统时间
def get_time():
    return time.strftime("%H:%M:%S")

# 绘制数字字符的七段数码管
def draw_digit(canvas, x, y, digit):
    for i, segment in enumerate(digit):
        if segment == "1":
            if i == 0:
                canvas.create_rectangle(x+5, y, x+55, y+10, fill=colors[segment], outline="")
            elif i == 1:
                canvas.create_rectangle(x+55, y+5, x+65, y+55, fill=colors[segment], outline="")
            elif i == 2:
                canvas.create_rectangle(x+55, y+60, x+65, y+110, fill=colors[segment], outline="")
            elif i == 3:
                canvas.create_rectangle(x+5, y+110, x+55, y+120, fill=colors[segment], outline="")
            elif i == 4:
                canvas.create_rectangle(x, y+60, x+10, y+110, fill=colors[segment], outline="")
            elif i == 5:
                canvas.create_rectangle(x, y+5, x+10, y+55, fill=colors[segment], outline="")
            elif i == 6:
                canvas.create_rectangle(x+5, y+55, x+55, y+60, fill=colors[segment], outline="")
        y += 120

# 更新时间显示
def update_time(canvas, time_text):
    time_now = get_time()
    time_text.set(time_now)
    canvas.delete("digit")
    x = 20
    y = 20
    for digit in time_now:
        draw_digit(canvas, x, y, digits[digit])
        x += 70

# 创建主窗口
root = tk.Tk()
root.title("七段数码管显示时间")

# 创建画布
canvas_width = 500
canvas_height = 200
canvas = tk.Canvas(root, width=canvas_width, height=canvas_height)
canvas.pack()

# 创建时间显示标签
time_text = tk.StringVar()
time_label = tk.Label(root, textvariable=time_text, font=("Arial", 36))
time_label.place(x=20, y=150)

# 更新时间显示
update_time(canvas, time_text)

# 定时更新时间显示
root.after(1000, update_time, canvas, time_text)

# 进入消息循环
root.mainloop()

运行这段代码，即可看到绘制的七段数码管以及当前系统时间的显示效果。