Your smartphone has approximately 110 meters (about 360 feet) of wiring. These wires connect the camera, speaker, screen, wifi antenna, GPS, battery, fingerprint sensor, dozens of microchips, and many more components into one device, enabling all components to work closely together. A football field’s length of wiring is precisely integrated into your smartphone, but where … Read more
PCB Printed Circuit Board Main Points 01 What is PCB? PCB (Printed Circuit Board) refers to a printed board that forms connections between points and prints components on a common substrate according to a predetermined design. It serves as a support for electronic components and as a carrier for their electrical interconnections. Classification 1. According … Read more
With the development of the automotive industry, the number of electronic control systems in vehicles has grown exponentially. The in-vehicle electronic control system, centered around the ECU, is gradually replacing passive devices and mechanical systems, while also fulfilling most measurement, drive, and control functions. The increase in new in-vehicle electronic control systems in vehicle applications … Read more
Last week, EDN published an article about children’s learning in electronics, stating that electronic programming has become one of the favorite courses for kids today. Additionally, the “Raspberry Pi” is increasingly popular worldwide, with some parents even encouraging their children to use Raspberry Pi to learn product development. China’s CrowPi has sensed the opportunity and … Read more
A traditional fuel vehicle requires about 500 to 600 chips, a mild hybrid vehicle requires about 1000 chips, and plug-in hybrid and pure electric vehicles require at least 2000 chips. This means that with the rapid development of smart electric vehicles, the demand for advanced process chips is increasing significantly, and the demand for traditional … Read more
Introduction: This article introduces the MCU chips in four domains: body, chassis, power, and cockpit, from four dimensions: working requirements, performance requirements, industry landscape, and industry barriers. It also organizes the application status of domestic MCU chips for reference by practitioners. 1. Introduction to Control Chips The control chip mainly refers to the MCU (Microcontroller … Read more
First, let us briefly introduce the specific functions of each pin of the 51 microcontroller, and then we will focus on the concept of the microcontroller minimal system, its composition, and the practical uses of the circuit diagrams of its various parts. According to the pin identification method of integrated circuits, with the notch facing … Read more
Today we analyze a classic microcontroller power supply circuit, the schematic diagram of the circuit is shown below: ▲ Simplified switch circuit Before powering the circuit, the switch “TEST” is open, and the microcontroller is not powered through VCC. At this point, the base of T1 is grounded through R9 (100k), putting it in the … Read more
The microcontroller’s CPU, while processing an event A, receives a request to quickly handle another event B (interrupt occurs); the CPU temporarily interrupts its current work to process event B (interrupt response and interrupt service); upon completing event B, the CPU returns to the original point of event A that was interrupted to continue processing … Read more
This article begins by introducing microcontrollers from the perspective of integrated circuits, mainly covering the pin diagram and functions of microcontrollers, as well as basic programming. First, let’s take a look at the functional block diagram of the 80C51 microcontroller. The 80C51 microcontroller belongs to the MCS-51 series and uses a 40-pin dual in-line package … Read more