1. Problem Analysis We need to write a subroutine that displays a given byte of data in hexadecimal format at the center of the screen. One byte should be represented by two hexadecimal characters, corresponding to the high 4 bits and low 4 bits of the value. Key Points: Separate the high 4 bits and … Read more
1. Overview of CPU I/O Capabilities The CPU not only has computational capabilities but also needs to exchange data with external devices, a capability known as I/O (Input/Output) capability. Typical I/O operations in a computer system include: Keyboard input Display output Disk read/write Network communication, etc. 2. Two Core Issues in Peripheral Interaction 1. Peripheral … Read more
1. Abstract A single-chip microcomputer (Single-Chip Microcomputer) is a microcontroller that integrates CPU, RAM, ROM, timing, counting, and various interfaces into one. It is small in size, low in cost, powerful in function, and widely used in smart products and industrial automation. The 51 microcontroller is one of the most typical and representative microcontrollers. This … Read more
The agreement has been signed. On June 11, at the Jakarta International Military Police and Defense Exhibition, Indonesia purchased 48 KAAN “Khan” fifth-generation fighters from Turkey. The contract amounts to a staggering $10 billion, with a project timeline of 10 years for delivery. This marks the first international export order for the KAAN “Khan” and … Read more
2017 Turkey—-2017.03.15—-46/16/D5/D266Standing in the ancient theater of Aspendos, which is over 2000 years old, I listened to my companions sing my country. They freely sat in a semicircular arrangement on the theater steps, singing impromptu. Without the aid of sound equipment, the theater’s semi-enclosed echo enhanced the loud singing, making it very pleasant to hear.Tonight, … Read more
Introduction: Enjoy this vegetable in summer: high in Vitamin C at just 2 yuan per jin, no stir-frying or pickling needed, just shred and mix for a crisp and refreshing dish. In people’s daily diets, common cooking methods include braising, steaming, quick frying, boiling soup, and making cold dishes. As summer approaches, the weather gradually … Read more
Produced by | Damo Finance After four years, the “Ping An Health” app has been renamed back to “Ping An Good Doctor”. On June 10, Ping An Good Doctor (1833.HK) officially announced its brand renewal, reusing “Ping An Good Doctor” as its external brand name. In the following two trading days, the stock price of … Read more
In the luxury sedan market, the classification of the Audi A6 has always been a hot topic among car enthusiasts. With the launch of the 2025 Audi A6L mid-cycle facelift, this classic model has once again attracted industry attention. This article will comprehensively analyze the true positioning of the Audi A6, from the German industrial … Read more
Title: Mercedes-Benz C-Class: A Strong Contender in the Luxury Market, Like a Veteran Actor in Hong Kong Dramas When 84-year-old veteran actor Luo Le Lin arrives at the filming location in his 2019 Mercedes-Benz C260L, the moment the door opens, even the reporters can’t help but exclaim: “This outfit is a perfect match for the … Read more
First Author: Zhou Tong, Luo Zhongge, Zhao Jiangting Corresponding Authors: Liu Qingju (Yunnan University, e-mail:[email protected]) Tang Junwang (Tsinghua University, e-mail: [email protected]) Abstract:Photocatalytic hydrogen production is considered a promising strategy to mitigate the environmental impact of carbon-intensive chemical industries. Previous studies have shown that loading single atoms can significantly enhance photocatalytic efficiency, and their catalytic activity … Read more