华为逻辑电平设计规范是华为内部培训的经典资料，是硬件工程师的必备知识-Huawei logic level design specification is a classic in-house training Huawei information is essential knowledge of hardware engineers

常用的逻辑电平设计规范，基础知识，实用好用(Common logic level design specifications, basic knowledge, practical)