KS C IEC 60122-2-1-2011 频率控制和选择用石英谐振器.第2部分:频率控制和选择元件用石英晶体元件的使用指南
Quartz crystal units for frequency control and selection-Part 2:Guide to the use of quartz crystal units for frequency control and selection-Section one:Quartz crystal units for microprocessor clock supply