说明：  从事电子电路设计开发的，既有有多年经验的老手，也有刚入道的新手。每个人都对单片机、DSP、嵌入式系统投入了大量的时间和精力去研究，但是对于电路设计中应用最多、最广泛的元器件－－电容，又有多少人能搞的很清楚呢？
(Engaged in electronic circuit design and development, both veteran with years of experience, but also newly recruited Road novice. Everyone on the MCU, DSP, embedded systems put a lot of time and energy to study, but the most widely used for circuit design, the most widely used components- capacitors, how many people can engage in very clear?)