Abstract : The introduction of a cost—based AT89S52 MCU a temperatur measurement circuits, the
circuits used DS18B20 high—precision temperatur sensor , measuring scope —55℃—~+125℃,can
use the keybord set the warning limitation, the use of four bits seven segments LED that can
be display the current temperature. The paper focuses on providing a software and hardware
system components circuit, introduced the theory of DS18B20, the founctions and applications
of AT89S52 .This circuit design innovative, powerful, can be expansionary strong。
Key Words : Temperatur measurement DS18B20 AT89S52
目 录
1 前
言········································
······················3
2 方案设
计········································
··················3
3 系统的硬件设
计········································
············4
3。1 主控制
器········································
················4
3。2 显示电
路········································
················5
3.3 温度传感器工作原
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