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2014-10-10
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ABSTRACTII
µÚ1ÕÂ ÒýÑÔ1
1.1 ±³¾°1
1.2 Ñо¿ÄÚÈÝ2
µÚ2Õ Èí¼þÉè¼Æ3
2.1 ³ÌÐòÁ÷³Ìͼ3
2.2³ÌÐòÉè¼Æ4
2.2.1 ѧºÅÏÔʾ³ÌÐò4
2.2.2 ¼Òô×Ó³ÌÐò5
2.2.3 ·ÅÒô×Ó³ÌÐò7
2.3 ¿ª·¢Æ½Ì¨¡ªKeil C51 ¿ª·¢ÏµÍ³10
µÚ3Õ ϵͳӲ¼þÉè¼Æ¼°·ÖÎö11
3.1 ϵͳ·½°¸Éè¼Æ11
3.2ϵͳÆ÷¼þ½éÉÜ11
3.2.1 AT89S51µ¥Æ¬»ú¼ò½é11
3.2.2AT89S51 ISP15
3.2.3 ISD4004ÓïÒôоƬ15
3.2.4ÒôƵ¹¦ÂÊ·Å´óÆ÷LM38620
3.2.5¿Éµ÷ÏßÐÔÎÈѹÆ÷LM31720
3.3 »ùÓÚISD4004µÄÓïÒô¼·ÅÄ£¿éµç·Éè¼Æ22
3.4 ×îСϵͳ°åµÄµç·Éè¼Æ24
3.6 ϵͳ²âÊÔ26
µÚ4Õ ½áÊøÓï27
ÖÂл28
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±¾Éè¼ÆÊÇ»ùÓÚISD4004µÄÖÇÄܽÌʦµãÃûÆ÷ϵͳ£¬¿É¹©¶àýÌå½ÌѧʱʹÓ㬶ÔÈ«°àѧÉúµãÃûʱ£¬¿ÉÒÔ²ÉÓÃ×Ô¶¯µãÃûºÍËæ»úµãÃûÁ½ÖÖ·½Ê½¡£Í¨¹ý½ÌʦµãÃûÆ÷µÄ°ïÖú£¬¿ÉÒÔ´ó´ó¼õÉÙÀÏʦµãÃûµÄʱ¼ä£¬Ôö¼ÓÉϿεÄЧÂÊ¡£
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ABSTRACT
MCU is now widely used in the each field of our life, the embedded system with MCU as the core has widely applied to many fields¡£This article is about the design of Teacher Calling Machine System, which is applied in the area of calling-control and is manipulated by AT89S51.
This project has designed a intellectual teacher calling system based on the ISD4004, which can be used in the multimedia teaching£¬rollcall of the whole class can use two ways£¬one is automatically calling, another one is randomly calling. With the help of Teacher Calling Machine, time will be saved and efficiency will be raised.
Keywords: Single-chip Computer£¬speech chip£¬nixie tube.