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
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
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
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
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
These two capacitors are called the load capacitors of the crystal oscillator, connected to the two pins of the oscillator and to ground, typically in the range of tens of picofarads. They affect the resonant frequency and output amplitude of the oscillator, and the supplier usually asks for the load capacitance when ordering the crystal … Read more
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
Some screenshots from electronic books 【Complete Set of Hardware Learning Materials Collection】
1. Key Knowledge Points:1. Microcontrollers and their internal structure;2. Microcontroller application systems and development processDifficulties: The concepts of microcontrollers and microcontroller application systemsRecommended Learning Method: Light up an LED with a microcontroller, using the Keil C51 development environment to write the program.2. Learning Tasks: 1. Learn to use the Keil C51 development environment for developing … Read more
Don’t let these misconceptions hinder your growth curve At two in the morning, the lights in the lab are still on. You stare at the flashing timing error messages on the screen, having modified the Verilog code for the 17th time, yet the development board remains silent as a stone. The coffee beside you has … Read more