在定时自动记录中，通常采用数字时钟芯片ＬＭ８３６５作定时器，存储器２７２５６作记录元件。文章介绍一种编码方法，应用门电路和总线寄存器。将数字时钟芯片输出的４６位月、日、时显示信号缩编到１５位信号，使其与存储器２７２５６的地址数相一致。 Automatic recording in time, usually using the digital clock chip LM8365 timer, memory 27256 for recording components. This article describes a coding method that uses gates and bus registers. The digital clock chip output of the 46-month, day, hour display signal reduced to 15-bit signal, so that it is consistent with the number of addresses of the memory 27256.