本文用晶體管PN結(jié)作溫度傳感器，用集成電路ICL7135等作A／D轉(zhuǎn)換器，以AT89C51為控制器，制作了測量精度可達0.01℃的數(shù)字溫度計。主要介紹了本數(shù)顯溫度計的硬件結(jié)構(gòu)和軟件編程實現(xiàn)的方法，通過實驗測試說明，所設(shè)計的溫度計能達到要求。
關(guān)鍵詞：單片機AT89C51 數(shù)顯溫度計 溫度傳感器 A／D轉(zhuǎn)換器

Abstract: This paper introduces a digital thermometer with 0.01℃ precision, whose
controller is the computer AT89C51 ,whose A/D converter is made of the integrated
circuit ICL7135 and whose temperature sensor is made of a transistor tube. This
paper demonstrates the procedures of the hardware structuring and the software
programming of this kind of digital thermometers. Experiments and tests prove that
the design of this kind of digital thermometers has come up to the required
standards.
Key words: single-chip AT89C51, digital thermometer, temperature sensor, A/D
converter