短语词组短語real -time clock word [計]實時時鍾字RTC -BATT Real-Time-Clock Battery 實時時鍾電池Real -Time-Clock Selection and Optimization 實時時鍾的選擇與優化RTCCE Real -Time-Clock Chip Elect 實時時鍾片選信號Set Real -time Clock 時鍾指令 返回 real time clock