Event time: From now until July 24Event process:1. Click the "Check-in now" button below to enter the pop-up store and start the event;2. Click on the 4 check-in points in the pop-up store, follow the...
I. Overview
Continuously improving the communication capacity and quality of the communication system is the eternal theme of wireless communication. With the rapid development of wireless communicati...
Measure the output waveform of an 8 MHz active crystal oscillator. As shown in the figure, the dark yellow square wave is the output waveform. 1. How are the oscillations at the upper and lower edges ...
With the popularity of smart homes, sweeping robots have become the new favorite of young urban white-collar workers and have been promoted to one of the three essential household appliances. Sweeping...
1. To configure a serial port, it is omitted here.2. To configure and use printf,just add the following redirection code:
//Support functions required by the standard librarystruct __FILE{int handle;}...
ThinkPad - General solutions to power management problems Applicable models: All ThinkPad A31 Document content: I. General diagnostic methods and solutions to power management problems: 1. Confirm whe...
1. First of all, let me answer a question: Can STM32 achieve low power consumption? The answer is yes, and there is data to support this. When I tested the STM32101CB, FLASH: 128K, RAM: 16K and RTC ...[Details]
Apple's official website has updated the iPhone user manual, confirming that the compass in iOS 15.1 no longer displays coordinates, altitude and other information. The description before the updat...[Details]
This morning, Apple quietly closed the iOS/iPadOS 13.2.3 verification channel. In fact, the official version of iOS 13.3 was just pushed last week. Apple's move means that it is no longer pos...[Details]
NXP UCODE® 9xm combines leading performance with customer-configurable large memory to expand industrial RFID tag applications UCODE 9xm has leading performance, and its sensitivity is more than th...[Details]
In recent years, 180° motor control has been widely used and paid attention to for its energy saving, quietness and low vibration, especially in the field of household appliances, such as range hoo...[Details]
Pulse signal generators can generate pulse signals with adjustable repetition frequency, pulse width and amplitude, and are widely used in dynamic characteristic tests of pulse circuits and digital ...[Details]
In order to design a module that can realize SMS sending and receiving and wireless data transmission, this paper uses the mainstream product STM32 with ARM Cortex-M3 core as the main control chip ...[Details]
The authoritative research organization Gartner today released the global smartphone sales report for the third quarter of 2019. The report shows that Huawei sold 65.8 million smartphones in the thir...[Details]
On November 4, 2021, WPG Holdings , a leading semiconductor component distributor dedicated to the Asia-Pacific market , announced that its subsidiary Pinjia has launched a low-cost automotive lighti...[Details]
1. Use a pointer multimeter to identify the field effect tube (1) Use the resistance measurement method to identify the electrodes of the junction field effect tube. According to the phenomenon that ...[Details]
On November 28, BOE Technology Group Co., Ltd. announced that it plans to invest in the construction of the BOE (BOE) 8.6th generation AMOLED production line project in the High-tech West District of...[Details]
1. S3C244 clock system Keywords related to clock: Fin – external input crystal frequency, TQ2440 external crystal frequency is 12MHz; FCLK – for CPU core, i.e. the frequency of CPU core; HCLK – u...[Details]
In today's era, every household will be equipped with a wireless doorbell, a wireless remote doorbell, also known as a remote doorbell or a wireless doorbell. Generally, a wireless remote doorbell ...[Details]
When repairing electronic circuits, it is often necessary to remove integrated circuits from PCB printed circuit boards. Since integrated circuits have many and densely packed pins, it is difficult to...[Details]
1. Comparison of I2S, AC97, PCM between S3C6410 and WM9713:
1. I2S, AC97, and PCM are different, each has its own, and the timing of the three is different. For the two sides to communicate, t...[Details]
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