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本文介绍一种适于在微型机Z—80系统中使用的中断式键盘终端。论述了这种键盘终端的硬件设计原理及其结构;给出了中断处理程序的主要功能及程序设计中的安排和框图。在有实时操作系统的微型机上配置这种键盘终端,就能使系统具有实时人机会话的能力,从而为过程控制带来了更大的灵便。
This article describes an interrupt keyboard terminal that is suitable for use in the Mini Z-80 system. The hardware design principle and structure of keyboard terminal are discussed. The main functions of interrupt handler and the arrangement and block diagram in program design are given. Configuring this type of keyboard terminal on a mini-PC with a real-time operating system gives the system the power of a real-time human-machine conversation, bringing greater agility to process control.