摘要
介绍了一种使用８２７９芯片实现的微机多功能控制接口，该接口只使用少量硬件即可得到８路８位自持式Ｄ／Ａ转换，８个（或１６个）自动扫描的ＬＥＤ８段显示器和８×８键盘阵（或６４点开关量输入）。本接口电路已在几个微机控制项目中应用，取得了节约硬件，降低成本，简化软件，提高可靠性的良好效果。
This paper introducesa multifunctional control interface achieved by a 8279chip.There are 8-bit self hold D/A converter with 8-channel multiplexer,autoscan drive circuit of & or 16-digit LED eightsegment display and 8×8 matrixkeyboard (or 64 switch input)in this interface,but only little hardware wereused. This interface has been used in a few microcomputer control projects ofwriter of this paper and achieved the good results in respect of saving hardware,decreasing cost,simptifying software and increasing reliability,
