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一、基本原理对于微型机来讲,不论是单片机还是Z80单板机,其硬件结构基本相同,即都是由CPU、内存、外设(包括显示器、键盘)及三总线构成,只是指令系统各不相同(即CPU内部结构不同)。但CPU与内存、外设之间都是由三总线相联系,在单片机和单板机的三总线中,数据总线及地址总线是相同的,控制总线也大致兼容。根据上述原理,我们设计了JY-51A型简易实验仪。其基本原理就是将原TP 801单板机的CPU换成8031单片机,保留并利用了原单板机上的RAM、显示器及键盘部分,使单板机一机两用。二、硬件结构该装置主要由8031、8155及一片2717(2K字节,51单片机监控)构成。其中8155可供用户使用,
First, the basic principle For the microcomputer is concerned, whether it is a single chip or Z80 single board machine, the hardware structure is basically the same, that is, by the CPU, memory, peripherals (including monitors, keyboards) and three bus structure, Not the same (that is, different internal structure of the CPU). However, CPU and memory, peripherals are connected by the three bus, microcontroller and single board three bus, the data bus and address bus is the same, the control bus is also generally compatible. According to the above principle, we designed a JY-51A simple experiment instrument. The basic principle is to change the CPU of the original TP 801 single-chip microcomputer into an 8031 single-chip microcomputer. The RAM, display and keyboard part on the original single-board computer are retained and used, so that the single-board computer is used in dual functions. Second, the hardware structure The device mainly by the 8031,8155 and a 2717 (2K bytes, 51 MCU monitoring) form. Of which 8155 for the user,