期刊名称：Faculty of Computer Science and Information Technology
出版年度：2008
卷号：0
期号：0
语种：English
出版社：Faculty of Computer Science and Information Technology
摘要：Microcontroller is a control system which is popular and widely used in themanufacture of electronic circuits. One type used is the AT89S51microcontroller, an MCS-51 family that has several features and advantagescompared to other types of microcontroller. This microcontroller is used on asafety with an optocoupler as sensorrnya. This safety circuit using a 5 (five)optocoupler sensor. Each sensor is placed behind the door or window has closedand open systems capable of detecting conditions in open or closed position.Detection of a state in open and closed positions when the light is transmitted bythe transmitter is not blocked up or enter into recevier then the data will beprocessed by the microcontroller which will then be displayed by sevensegments, and followed by the Buzzer sounds.
