ST's Capacitive Touch Button Solution 2

LED (Light Emitting Diode) is a solid-state semiconductor device that can directly convert electricity into light. The heart of LED is a semiconductor chip. When current is applied to this chip through wires, electrons and holes are pushed towards the quantum well, where they recombine and emit energy in the form of photons. Capable of completing dozens of different tasks, and their presence can be found in various devices. For example, they can form numbers on the dial of an electronic clock, transmit information from a remote control, illuminate the watch dial, and give you a prompt when the device is turned on. If they are gathered together, they can form images on a large TV screen or be used to light up traffic signals. [Full text]  diode

A 4-digit digital tube is a semiconductor light-emitting device that uses light-emitting diodes as its basic unit. In our daily lives, displays such as electronic scales and digital clocks are implemented using digital tubes, which have been widely used today. [Full text]

The display, I2C communication with the motherboard, and a SWIM interface are provided for engineers to debug (as shown in Figure 2).

The STM8s105S4 adopts the ST advanced STM8 core, with a 3-level pipeline Harvard structure, a working voltage of 3.0~5.5V, and an internal 16MHz RC that can provide MCU

MCU Microcontrollers, also known as MCU or μ C, are also referred to as Single Chip Microcontrollers. They integrate ROM, RAM, CPU, and I/O into the same chip to provide different combinations of control for different application scenarios Microcontrollers have undergone continuous research and development over the past few years, from 4-bit, 8-bit, to 16 bit, 32-bit, and even 64 bit After more than 20 years of development, its cost has become lower and its performance has become stronger, making its applications ubiquitous and widespread in various fields. 16MHz operating frequency, providing low-power mode and peripheral clock shutdown function, with a total of 34 I/O available. STM8s105S4 has 2KB of RAM and 16KB of FLASH, as well as 1KB of EEPROM data storage with up to 300000 erase/write cycles  diode