Everyone knows that assembly language instructions consist of an opcode and operands. The MCS-51 uses assembly language instructions, which have a total of 44 opcode mnemonics and 33 functions, with operands such as ＃data, direct, Rn, and @Ri. Here, we will first introduce mnemonic symbols for instructions and methods for memorizing them. 1. Mnemonic Symbol … Read more
Hello everyone, I am Tao Ge. Having been in contact with computers for many years, I often feel a sense of confusion. Today, let’s work together to build a computer to deepen our understanding and experience. It must be stated that computers can be complex or simple, but their structures and principles are fundamentally similar. … Read more
For those of us born in the 80s, our first encounter with computers likely occurred around 1995, when the buzzword was multimedia. I still remember watching a classmate successfully open a game by entering a few DOS commands, and I was utterly impressed. To me, what appeared on the screen was like a foreign language. … Read more
Interoperability Between C Language and ARM Assembly Language 1. Accessing C Language Global Variables from Assembly Global variables can only be accessed indirectly through their addresses. To access global variables in C, you must first introduce the global variable using the extern directive, and then load its address into a register. For unsigned char type, … Read more
Do you know how the programming languages you often use are implemented? Today, let’s talk about this question. Smart humans discovered that by combining simple switches, they could express complex boolean logic. Based on this, they built the CPU, which can only understand switches in a simple way, represented numerically as 0 and 1. The … Read more
0 Introduction Assembly language is a low-level programming language related to computer hardware. Since the Intel 80×86 processor and its compatible machines are the mainstream processors for personal computers, the current assembly language teaching in domestic universities mainly focuses on Intel processors and their development tools. Due to national information security considerations, establishing an independent … Read more
Mathematics Algorithm Club Date ： December 25, 2021 Total Words ： 4255 words Source ： Job Online Understanding the internal principles of compilers can help you utilize them more efficiently. Gradually delve into how programming languages and compilers work according to the order of compilation. This article contains numerous links, sample code, and charts to … Read more
Minimalist Poem Guide Poem is a web framework written in Rust. It provides a concise API and is feature-rich, exceeding what you typically find in microframeworks. It can decouple itself from many of the main features of web frameworks, offering developers as much flexibility as possible. In short, Poem focuses on simplicity, allowing you to … Read more
The 2nd China Rust Developer Conference (Rust China Conf 2021—2022) is about to start. Sudoke’s engineer Wei Xiaoya will share insights on building a high-performance privacy computing platform using Rust during the “Cryptography, Privacy, and Trusted Computing” session. Wei Xiaoya is one of the leaders of Sudoke’s Multi-Party Secure Computing Platform, and before joining Sudoke, … Read more
Hi everyone! I am Hu Ge, and today we will discuss an interesting topic: why Alibaba sticks to Java while ByteDance and Douyin are enthusiastically using Go and Rust. Why is that? 🤔 Let’s start with some technical and “historical baggage” and also discuss the “language distribution” within large companies. Alibaba’s attachment to Java can … Read more