An “intelligent” RS232 analogue-to-digital converter

R.J Chance
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Abstract

A design for a low speed simple-to-build analogue-to-digital converter peripheral circuit is described. Portability between as many different main computers as possible is achieved by using a serial communication port. An 8748 single-chip microcomputer chip is used to give versatility and hardware independence to the design while at the same time retaining a simple circuit. Two analogue inputs are provided, digitized to a resolution of 12 bits, while a real-time clock is included on the basis that expired time is very frequently needed in data-logging work.

一个“智能”RS232模数转换器
介绍了一种低速简易模数转换器外围电路的设计。通过使用串行通信端口,可以在尽可能多的主计算机之间实现可移植性。采用8748单片机,使设计具有通用性和硬件独立性,同时保留了简单的电路。提供了两个模拟输入,数字化到12位分辨率,同时在数据记录工作中经常需要过期时间的基础上包括一个实时时钟。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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