gvkAAA毕业设计（论文）-基于89C52单片机的数字式工频有效值多用表设计

毕业设计（论文）-基于89C52单片机的数字式工频有效值多用表设计徐州师范大学生毕业设计 数字式工频有效值多用表 目 录 摘要„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„? Abst