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The following is the 51 single-chip digital clock program: #include AT89X52.h #define DSbus P0 #define LCDbus P1 //Define the control lines of DS12C887 and LCD sbit DS_CS = P2^7; //Pin 13, chip s...[Details]
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After the iPhone 14 Pro CAD renderings surfaced online recently, the renderings of the iPhone 14 model have now been exposed, showing the same "bangs" and rear camera design as the iPhone 13. The i...[Details]
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Radio frequency is abbreviated as RF, which is the abbreviation of radio frequency current. It is a high-frequency alternating electromagnetic wave. When the frequency of electromagnetic waves is l...[Details]
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Smartphone audio quality should include two aspects: first, the sound quality as a portable communication device; second, the high-fidelity restoration as a smartphone "music player". This issue of...[Details]
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Program optimization refers to the process of adjusting and improving the program using software development tools after software programming is completed, so that the program can make full use of ...[Details]
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The figure shows the appearance of some small power transformers. It is mainly composed of iron core, frame, winding, insulation and fasteners.
1. Iron core
Common iron cores of small pow...[Details]
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1. P port register: (1) PxDIR Input/Output Direction Register (0: Input mode 1: Output mode) (2) PxIN input register The input register is a read-only register. The user ...[Details]
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Recently, JinkoSolar's Jiangxi production base successfully trial-produced the first polycrystalline silicon solar cell module in Shangrao, each with a capacity of 180 watts. The successful trial ...[Details]
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Not long ago, Xiaomi officially released the new MIUI 13 system, which added many new features and functions, and further improved the fluency. The current Xiaomi 12 has been pre-installed at t...[Details]
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Signal acquisition devices are widely used in machine health diagnostic systems for recording, monitoring and diagnosis. Machine condition data is often collected by non-portable or wired devices. ...[Details]
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The Galaxy Z Fold3 5G is Samsung's first foldable phone to support the S Pen stylus, but the phone cannot be used with the regular S Pen. The Galaxy Z Fold 3 is only compatible with the S Pen ...[Details]
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With the widespread application of embedded systems, a large number of 16-bit and 32-bit embedded processors have emerged. However, the traditional 8-bit microcontroller has been used in production...[Details]
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As electronic systems become more complex, with up to five voltage rails per processor and multiple processors per printed circuit board, power complexity has increased. Requirements such as tracki...[Details]
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Reentrant functions
In the design of real-time systems, it is often the case that multiple tasks call the same function. If this function is unfortunately designed to be a non-reentrant fun...[Details]
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November 4, 2024, Hong Kong, China -
OPPO Guangdong Mobile Communications Co., Ltd. (OPPO) and the Hong Kong Polytechnic University (PolyU) held a cooperation renewal ceremony to further deepen...[Details]
RF/Wirelessly
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