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4-Digit 7-Segment Displayο
4-Digit 7-segment display consists of four 7- segment displays working together.
The 4-digit 7-segment display operates independently. It leverages the principle of visual persistence to rapidly cycle through each digit, creating the appearance of a continuous sequence of characters.
For example, when β1234β is displayed, the first 7-segment digit lights up to show β1β while the other three remain off. Shortly after, the second digit lights up to display β2,β with the first, third, and fourth digits turned off. This process continues in sequence until all four digits are displayed. The entire cycle happens very quickly (typically within 5 milliseconds). Due to the phenomenon of optical afterglow and visual persistence, the human eye perceives all four characters as being displayed simultaneously.
Display Codes
To help you get to know how 7-segment displays(Common Cathode) display Numbers, we have drawn the following table. Numbers are the number 0-F displayed on the 7-segment display; (DP) GFEDCBA refers to the corresponding LED set to 0 or 1, For example, 00111111 means that DP and G are set to 0, while others are set to 1. Therefore, the number 0 is displayed on the 7-segment display, while HEX Code corresponds to hexadecimal number.
Numbers |
Binary Code |
Hex Code |
|---|---|---|
0 |
00111111 |
0x3f |
1 |
00000110 |
0x06 |
2 |
01011011 |
0x5b |
3 |
01001111 |
0x4f |
4 |
01100110 |
0x66 |
5 |
01101101 |
0x6d |
6 |
01111101 |
0x7d |
7 |
00000111 |
0x07 |
8 |
01111111 |
0x7f |
9 |
01101111 |
0x6f |
A |
01110111 |
0x77 |
B |
01111100 |
0x7c |
C |
00111001 |
0x39 |
D |
01011110 |
0x5e |
E |
01111001 |
0x79 |
F |
01110001 |
0x71 |
Example
5.3 Time Counter (For MicroPython User)
7.4 Building a Passenger Counter (For MicroPython User)
7.5 Creating a β10 Secondβ Game (For MicroPython User)
7.6 Building a Traffic Light Controller (For MicroPython User)
5.3 Creating a Time Counter with a 4-Digit 7-Segment Display (For Arduino User)