Data Sheet

UCTRONICS Ultimate Starter Leaning Kit for Raspberry Pi #K0064
82 www.uctronics.com
8.10 Project 10 4-digit 7-segment display
8.10.1 Overview
In this lesson, we will program the Raspberry Pi to achieve the controlling of 4-digit
7-segment display.
8.10.2 Requirement
 Raspberry Pi ×1
 220Ω Resistor ×4
 4-digit 7-segment display ×1
 Breadboard ×1
 Several Jumper wires
8.10.3 Principle
1. What
’
s four-digit segment display ?
The four-digit segment display is a form of electronic display device for displaying decimal
numerals that is an alternative to the more complex dot matrix displays. Four-digit segment
displays are widely used in digital clocks, electronic meters, basic calculators, and other
electronic devices that display numerical information. The four-digit segment display is an
4x8-shaped LED display device composed of 32 LEDs (including four decimal points), these
segments respectively named a, b, c, d, e, f, g, h, dig1, dig2, dig3, dig4.