时钟结构定时器 clockwork timer

计时时钟结束 Time-of-day clock stopped

时钟结构 CLOCK ARCHITECTURE

计不时钟结束 Time-of-day clock stopped

半速时钟结构 Half-Rate Clock Architecture

时钟体系结构 CLOCK ARCHITECTURE

实时时钟的结构框图 REAL TIME CLOCK OPERATION DESCRIPTION