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本讲座首篇文章已介绍了MCS-51系列单片机的硬件结构及特点,本篇将从软件设计角度来介绍MCS-51单片机。8031是MCS-51系列中最低档的芯片,其价格较便宜,适用于广大国内用户,因此本文将以8031芯片的硬件环境为基础,来分析指令系统。一、MCS-51系列的存贮器组织及寻址方式 1.存贮器组织在介绍:MCS-51系列(以下简称51)的寻址方式及指令系统之前,有必要先回顾一下51的存贮器组织。
The first article of this lecture has introduced the hardware structure and characteristic of MCS-51 series one-chip computer, this text will introduce MCS-51 one-chip computer from the software design angle. 8031 is the most low-end chip MCS-51 series, its price is cheaper, suitable for the majority of domestic users, this article will be based on the 8031 chip hardware environment to analyze the command system. I. MEMORY ORGANIZATION AND ADDRESSING OF THE MCS-51 SERIES 1. MEMORY ORGANIZATION Before introducing the addressing scheme and instruction system of the MCS-51 series (hereinafter referred to as 51), it is necessary to review the storage of 51 Storage organization.