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This time we are going to make a USB card reader for an SD card. We modified the USB flash drive project simulated by NAND Flash last time, so we only need to modify a small part. Most of the project...[Details]
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In recent years, driven by domestic mobile phone brands, the domestic mobile phone industry chain has achieved qualitative changes. It can be clearly seen that it has gradually transformed from rough...[Details]
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1 Introduction UPS (Uninterruptible Power System) AC power supply is increasingly widely used in various fields of the national economy. This article will introduce a practical and simple online UPS...[Details]
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Medical technology has always been one of the important application areas of CCD (charge coupled device) image sensors. Now, CMOS sensors have entered a period of rapid development. The reasons are, ...[Details]
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Why do we need to set the stack pointer sp (Stack Pointer) r13 in the assembly (.S) file when calling a C program? Also, how do we determine the value assigned when setting the stack pointer? .text...[Details]
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In the power supply and distribution system, the distribution transformer generally supplies power to the load, and the current flows from the grid side to the load, which is called forward current...[Details]
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As a new light source, in recent years, major companies and research institutions have been conducting research on LED
power supplies
and drive circuits. Unlike the electronic ballast o...[Details]
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According to DRAMeXchange, a memory storage research company of TrendForce, the contract price of DRAM in August this year was the same as that of the previous month, and the average price of DDR4 8G...[Details]
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Clock system and its distribution Figure 10 shows the main clock system and its distribution of AVR. These clocks do not need to work at the same time. In order to reduce power consumption, different...[Details]
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What preparations should be made before iPhone repair? Today, Apple Support's official Weibo account introduced that you should do three things before sending your iPhone for repair: One i...[Details]
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As global energy consumption shifts towards more electrified drive systems, reducing dependence on fossil fuels and prioritizing climate remediation, demand for high-performance batteries, especially...[Details]
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The following program uses PIC12C508 microcontroller, internal 4MHz clock, 50HZ pulse signal input at pin 4, and output at pins 7, 6, and 3 (GP0, GP1, and GP4 ports). The gradual change part makes th...[Details]
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According to the patent registration records of the State Intellectual Property Office, Vivo recently acquired a number of network and wireless communication patents from Ericsson. Public information...[Details]
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msvr3 turns on (`-msvr4') or off (`-msvr3') compiler extensions related to System V fourth edition (SVr4). The effects are as follows: * Which assembly syntax to output (you can select this ...[Details]
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Recently, a subsidiary of Volkswagen Group completed an endurance test using Quantumscape solid-state batteries, and the results showed that it can achieve an ultra-long life of 500,000 kilometers. On...[Details]
Analog electronics
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