Design and Implementation of an Independent Keyboard Simulation System Based on Microcontroller

1. Control Requirements1.Keyboard Structure: An independent keyboard structure is adopted, consisting of 4 mechanical keys K0~K3;2.Debounce Algorithm: A software delay debounce algorithm is used to effectively eliminate interference caused by mechanical key bounce;3.Display Method: A static display using a digital tube is employed to clearly and real-time show the value of the pressed key.2. Simulation … Read more

Design and Implementation of a DC Motor Control Simulation System Based on Microcontroller

1. Control Requirements1. Start/Stop Control: A light touch on the “Start/Stop” button allows for flexible switching of the motor’s operational state. Each time this button is pressed, the motor accurately toggles between running and stopping states, making operation simple and efficient;2. Direction Control: The “Forward/Reverse” button allows for easy changes in motor direction. Each press … Read more

A Bare-Metal Implementation of a Queue Module for Microcontrollers

Follow Us for More UpdatesStar Our Public Account to Not Miss Exciting Content from GitHub Source | GitHub When it comes to queues, many might first think of “queues” in RTOS. In fact, similar queue functionality can also be implemented in a bare-metal state. Today, I will share a module for implementing queue functionality in … Read more

Recommended Microcontrollers for Wireless Bluetooth Headphones

In the field of wireless Bluetooth headphones, the microcontroller serves as the core control unit, and its selection directly affects the performance, power consumption, stability, and user experience of the headphones. This article will recommend several mainstream models available in the market to assist engineers in making better decisions. 1. Qualcomm QCC5141/QCC5144 Positioning: High-end Bluetooth … Read more

Design and Implementation of a Key Increment/Decrement Digital Tube Display System Based on AT89C52 Microcontroller

Abstract This article designs a key increment/decrement digital tube display system based on the AT89C52 microcontroller. The system achieves numerical increment and decrement control through independent keys and drives the digital tube display using a dynamic scanning method. The paper details the hardware circuit design, software programming implementation, and anti-interference measures of the system. Test … Read more

Why Do Some Microcontrollers Operate at 3.3V While Others Use 5V? Can’t We Standardize?

Some may have noticed that the voltage standards for microcontrollers vary; some operate at 3.3V while others use 5V. Why isn’t there a unified standard? Is this a historical legacy issue or an inevitable result of technological evolution? Today, we will explore this question. 1. The Aftermath of the TTL and CMOS ‘Cold War’ The … Read more

The Secret of Microcontroller GPIO Driving Capability: Why ‘Sinking’ is More Powerful than ‘Sourcing’?

In embedded system design, we often need to use the General Purpose Input/Output (GPIO) pins of microcontrollers (MCUs) to drive peripheral devices such as LEDs and relays. I still remember that my first code in college was to control the blinking of an LED using the 8051 microcontroller. I wonder if the current university courses … Read more

Mastering Microcontrollers: Answer These Questions to Prove Your Skills!

With the rapid development of electronic technology, microcontrollers have become one of the essential basic components in many fields. They are small yet complete microcomputer systems that integrate a central processing unit (CPU), RAM, ROM, various I/O ports, and interrupt systems onto a single silicon chip using ultra-large-scale integration technology, and are widely used. 1. … Read more

Principles and Applications of Microcontrollers

A microcontroller (MCU) is a highly integrated, powerful microcomputer widely used in embedded systems, smart homes, industrial control, automotive electronics, and the Internet of Things (IoT). As an important hardware platform, microcontrollers are characterized by their compact size, low power consumption, high efficiency, and low cost. This article will introduce the basic principles, structural features, … Read more