Application and working principle of silicon controlled rectifier in infrared remote control switch There are two ways to turn off the unidirectional thyristor: one of them is well known, that is, when the anode potential of the thyristor is lower than the cathode potential or the anode current is less than the maintenance current, it…
In May 2020, MIT Technology Review stated that a multinational research team created the world’s first quantum radar system using entangled microwave photons. However, the central enterprise China Electronics Technology announced as early as August 2016 that the first quantum radar system based on single-photon detection was successfully developed at the 14th Institute, and the…
1. Driver introduction The Linux driver is essentially a software program. The upper layer software can communicate with the computer hardware through the interface provided by the driver without knowing the hardware characteristics. The system call is the interface between the kernel and the application, and the driver is the interface between the kernel and…
【Know STM32】 F1 represents the basic type, based on the Cortex-M3 core, with a main frequency of 72MHZ, and F4 represents high performance, based on the Cortex-M4 core, with a main frequency of 180M. [GPIO peripherals] 1. Eight working modes of GPIO 1. Pull-up input: IO port keeps high level when there is no input….
Why learn RTOS When we enter the embedded field, the first thing we often come into contact with is single-chip programming, and the first choice for single-chip programming is 51 single-chip microcomputer to get started. The microcontroller programming mentioned here usually refers to bare-metal programming, that is, programs that do not add any RTOS (Real…
1 Introduction Recently, I saw on CSDN that many people posted topics about the graduation season. Taking this opportunity, I also want to re-examine my own learning process, and share some learning experiences with myself and Da Niu. I hope to inspire and help everyone . The main purpose of this article is to: Provides…
Hainan is a beautiful place with beautiful scenery and pleasant climate, where you can feel the blue sea, blue sky, coconut wind and sea charm, enthusiastic, feel the most romantic tropical customs, appreciate the most spectacular volcanic landforms, what to visit Hainan? See the sea: Sanya, Wanning, Lingshui and other places of the beach, you…
In today’s increasingly strict garbage classification, garbage classification has become an inevitable trend, no matter how you do not adapt to it. Among several categories, kitchen waste is the most troublesome one, with large quantity, heavy odor and the greatest impact on family living environment. So, black technology “kitchen waste disposal” came into being! But…
Decoration as a long cycle, many processes of life events, a lot of visionary people, will be in the early decoration design good decoration scheme, have full preparation, in the decoration of the time will be more handy, do not need to decorate to half and at a loss. So the decoration design of the…