PEMBUATAN SISTEM KOMUNIKASI SERIAL ANTAR MIKROKONTROLER PADA PENYAMPAIAN INFORMASI SUARA (AUDIO) ANTAR RUANGAN

Abstract

A system of serial communications system between mikrokontroler at forwarding of information between room by using and mikrokontoroler and IC RS-485 Have been done realization and scheme. This System consist of hardware and software. Hardware consist of mikrokontroler AT89S51, IC RS-485, power supplay, amplifier, tone control and a LCD. While the software of mikrokontroler using language of assembly. This system work after pressing the keypad of room at master control for the election of gone to room and master will ask an answer at system slave. Slave system will give an answer by pressing the keypad than delivered to master control by serially and presented to LCD. This System can present article at LCD and also accept of choice answer at each slave which in the form of 4 indicator lamp with each indicator have an own answer sentence.