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ARM instruction B and BL analysis   The B or BL instruction causes the processor to transfer to the "subroutine name" and start execution, which is a jump instruction. The difference between the ...[Details]

introduction As chips become larger and larger and resources become more abundant, the design complexity of chips also increases greatly. In fact, after the chip design is completed, some controls so...[Details]

Alarm A The alarm "A" is a practical version of the complementary latch circuit of my introductory function. It has both normally open and normally closed triggers. Once activated - the buzzer...[Details]

　　When I first heard about the Raspberry Pi, I had no interest in it because it was not a new product for me. Earlier, I had played with the arm11 development board (S3C6410 series, see the picture b...[Details]

The S3C2440 memory controller provides the signals required to access external devices. This is a way to access extended peripherals through a bus. The S3C2440 memory controller has the following f...[Details]

10ns period -- 100Mhz frequency, 40mV Vpp I roughly guessed that there is a strong FM transmitter near you, right? I also discovered this phenomenon when adjusting the oscilloscope in the laboratory...[Details]

Philips has recently developed a lazy remote control that uses uWand technology and has only three buttons. The remote control is equipped with an infrared camera that is connected to two wireless tra...[Details]

This article: It is mainly Keil's modular programming. At the same time, a small experiment was implemented to realize the flowing light through Keil modular programming (three flowing modes were des...[Details]

The U.S. Patent and Trademark Office published a patent application from Apple relating to an updated version of the Apple Pencil that can be connected to an iPad Pro for charging. Apple's invention ...[Details]

Using stc89c52 single-chip microcomputer chip, the connection method of four-digit digital tube: P1 bit selection P0 segment selection Program: #include reg51.h   void delay(unsigned int d);       ...[Details]

2.21 Example Function In the previous examples, we introduced how to control the on and off of the LED by using buttons. However, we noticed that the program needs to detect the status of the butto...[Details]

HP said on Thursday that its CEO Dion Weisler will leave the company in November for personal reasons after nearly four years in the job.   HP said Weisler resigned to deal with family health issues....[Details]

By Wanda Garret, Engineer at Texas Instruments For system designers who are new to power supply design, the topic of switching regulator stability can seem daunting. The simplest way to ensure regu...[Details]

1 Hardware structure design of embedded PLC 1.1 Selection of microcontroller chip The CPU is the core of the PLC . It can recognize various instructions input by the user in a specific format, and ...[Details]

As an important part of the substation, the DC system provides a strong guarantee for the safe and stable operation of the power system. The battery pack is the main equipment for providing and sto...[Details]