Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join our technical exchange QQ group with a note 【Official Account】 for faster approval 1. Hardware System First, we need to understand that the most common computers (laptops) and the less common computers (servers) are essentially a combination of hardware: CPU, network card, … Read more
Click the blue words to follow us 1. Microcontroller Parallel External Expansion System 1. Microcontroller Parallel External Expansion System External expansion is an important aspect of building a microcontroller system, which can be categorized into two types: Memory expansion and I/O expansion; There are two methods for external expansion: parallel expansion and serial expansion. 2. … Read more
A chip is a way of miniaturizing circuits (mainly including semiconductor devices, as well as passive components, etc.). It uses a certain medium to comprehensively cover the center of a computer, such as the CPU, with the interface that displays this information, thus forming a small, miniature machine that integrates semiconductors on a substrate. Each … Read more
Siemens Comprehensive + TIA Portal + EPLAN Electrical Drawing Video Recordings are being sold at a low price in a package! Chuangkong Education Siemens Comprehensive Class Course Introduction The basic structure of a microcontroller includes six parts: Central Processing Unit (CPU), memory, timer/counter, input/output interface, interrupt control system, and clock circuit. I. Basic Components Central … Read more
Search WeChat Technical Training The basic structure of a microcontroller includes six parts: Central Processing Unit (CPU), memory, timer/counter, input/output interface, interrupt control system, and clock circuit. 1. Basic Components Central Processing Unit (CPU) It consists of an arithmetic logic unit and a control unit, which are the core of the microcontroller. The arithmetic logic … Read more
The programming principle of Flash is that it can only write 1 as 0, but cannot write 0 as 1. Therefore, before programming Flash, the corresponding block must be erased, and the erasure process is to write all bits as 1, turning all bytes in the block into 0xFF. Thus, programming can be said to … Read more
Memory, CPU, bandwidth, and disk usage are common aspects to monitor in Linux operations. Understanding how to check this information is a necessary skill. Below are several commonly used commands. General CPU and Memory top: Usage command: top Top Half %us Indicates the CPU usage rate of user space programs (not scheduled by nice) %sy … Read more
When purchasing server hardware, many factors need to be considered, such as the number of processors, available memory, and total storage capacity. When comparing servers offered by vendors, buyers should carefully evaluate eight important features. Processor One of the most important components to consider when purchasing server hardware is the processor, which performs data calculations. … Read more
To speed up operations and reduce disk I/O, the kernel typically caches as much memory as possible, which is known as Cache Memory. By design, pages containing cached data can be repurposed as needed (for example, by applications). Cache memory is not automatically released after a program finishes running. This can lead to a situation … Read more
Click the blue text Follow us Author | Bi Rong Introduction There are no specialized cells dedicated to specific memories. ——Karl Lashley We may easily remember a birthday party, the friends who attended, the taste of the cake, and the gifts, but it is difficult to recall what we did the day after the birthday. … Read more