Windows Desktop Application (1-3-3-1st) Performance and Memory Consumption under WOW64 Performance and memory consumption under

... WOW64 is determined by the following factors: 处理器硬件. Instruction emulation is performed on the chip. On x64 processors, x86 instructions are executed by the processor itself. Therefore, the execution speed under WOW64 under x64 is similar to that under 32-bit Windows. On the Intel...


About the difference between computer and MCU communication and MAX232, CH340T and PL2303

... Principle: The TXD and RXD of the MCU are TTL level, so you have to change the other signals into TTL levels. The MCU download program is likely to succeed! Among them, CH340, PL2303 and other chips directly convert USB signals to TTL level or TTL level to USB signals, while MAX232 and...


JavaScript from entry to mastery - study notes

... must understand JavaScript knowledge official name ECMAScript JavaScript is a scripting language based on object and event driven and with security features. The goal is to work with html and java applets to link multiple objects in a web page and interact with the client. JavaScript...


ARM64 knowledge system

... 目录 0.0 Background and learning resources AArch64 is an implementation state of the ARMv8 architecture. ARMv8-A is the first ARM processor from 64 bit architecture , which is the CPU used by mobile handsets. Two main execution states: (PS: Always thinking about how to execute v7 code in...


The third part of the peripheral article

... 2.1 SPI introduction SPI, is the abbreviation of Serial Peripheral interface, as the name suggests is the serial peripheral interface. Motorola was first defined on its MC68HCXX family of processors. It is a high-speed full-duplex communication bus, which is proposed by Motorola. The...


Summary of common cable interface types

... title: Summary of common cable interface types Date: 2018-09-23 Tags: Hardware In daily life, when we use computers, mobile phones, tablets, there are many cable interface types that are often used, but not everyone can clearly distinguish these interfaces to avoid errors. This is the...


ZigBee TI program hodgepodge notes

... 一,环境 1, hardware 七星虫CC2530 ZigBee development board 2, software TI ZStack protocol stack 3、IDE IAR 二Notes ※ AF_DataRequest() Parameter parsing in data transmission afAddrType_t Address description structure typedef struct { Union { Uint16 shortAddr; // 16bits short address (network...


Arm-linux-gcc compiler environment build

... record, convenient to query 1.Unzip sudo tar -xvlf arm-linux-gcc-4.4.3.tar.gz 2 Create a directory sudo mkdir /usr/local/arm_4.43 3. Move the extracted files to the newly created directory sudo mv /opt/Friendly//toolschain/4.4.3/ * /usr/local/arm_4.4.3 4. Configure the environment...


[Reserved] MINI2440 TD35 P35 touch screen can not be used? Let us change the first-line touch to the four-line touch

... 本本本百事网www.100ask.org/bbs/forum.php, and sincerely thank Wei Dongshan. A lot of embedded novices like me are expected to encounter the same problem when using the mini2440 to learn touch, that is, no matter how you compare the configuration of the register with the manual, or follow the...


LeetCode solution: Substring with Concatenation of All Words

... 题要求 You are given a string, s, and a list of words,words, that are all of the same length. Find all starting indices of substring(s) in s that is a concatenation of each word in words exactly once and without any intervening characters. Example 1: Input: s = "barfoothefoobarman", words ...