随机式磁偏转CRT字符显示心电监护仪的研制

The development of microcomputer-based arrhythmia monitor with random magnetic deflection CRT

本文介绍一种字符和波形同屏显示的微机控制心电监护仪,采用磁偏转线圈的CRT,以光栅隔行扫描方式显示字符,以随机扫描方式显示双道记忆波形。由于使用Z80 DMA和MC6845等大规模集成电路芯片,使仪器具有高的性能价格比。

ABSTRACT This paper introduces a microcomputer-based arrhythmia monitor. The magnetic deflection CRT displays characters by means of interlaced raster scanning and two channels freezing waveforms by random mode. Because of using Z80 DMA and MC6845 LSI chips, the instrument has a high ratio of cost to performance.