PCB concept

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原创最新推荐文章于 2026-07-30 09:39:14 发布 739 阅读 AI 写同款· GEO 优化 ›

Cadence Concept HDL原理图封装创建全流程：从Symbol绘制到Part关联实战在电子设计自动化（EDA）领域，原理图封装是连接逻辑设计与物理实现的关键桥梁，其核心在于确保符号（Symbol）与物理封装（Package）的精确映射。理解器件（Part）作为中心管理单元的原理，是构建可靠设计库的基础。这一严谨的库管理哲学，对于保证原理图与PCB设计数据的一致性、避免网表错误具有重要技术价值，尤其适用于维护大型历史项目或需要高设计一致性的复杂系统场景。本文聚焦于Cadence Concept HDL这一在遗产项目中常见的设计工具，深入解析其以Part为中心的库管理逻辑，并详细演示从创建原理阅读详情

printed circuit board

<hardware> (PCB) A thin board to which electronic components are fixed by solder. Component leads and integrated circuit pins may pass through holes ("vias") in the board or they may be surface mounted, in which case no holes are required (though they may still be used to connect different layers).

The simplest kind of PCB has components and wires on one side and interconnections (the printed circuit) on the other. PCBs may have components mounted on both sides and may have many internal layers, allowing more connections to fit in the same board area. Boards with internal conductor layers usually have "plated-through holes" to improve the electrical connection to the internal layers.

The connections are metal strips (usually copper). The pattern of connections is often produced using photo-resist and acid etching. Boards, especially those for high frequency circuits such as modern microprocessors, usually have one or more "ground planes" and "power planes" which are large areas of copper for greater current carrying ability.

A computer or other electronic system might be built from several PCBs, e.g. processor, memory, graphics controller, disk controller etc. These boards might all plug into a motherboard or backplane or be connected by a ribbon cable.

(1995-05-01)