【正文】 在打開的對話框中選擇“Debug”選項 卡，選擇使用 Proteus VSM Emulator 仿真，單擊 “Ok”完成 Debug 設置。. 軟件仿真采用KeilμVision 2 KeilμVision 2 是 Keil 公司關于 8051 系列 MCU 的開發(fā)工具，可以用來編譯 C 源碼、匯編源程序、連接和重定位目標文件和庫文件、創(chuàng) 建 HEX 文件、調試目標程序等，是一種集成化的文件管理編譯環(huán)境。測溫范圍：55~+125℃，在10~+85℃時精度為177。而且新一代產品更便宜，體積更小。C~+125176。 /EA/VPP：當/EA保持低電平時，則在此期間外部程序存儲器（0000HFFFFH），不管是否有內部程序存儲器。然而要注意的是：每當用作外部數(shù)據(jù)存儲器時，將跳過一個ALE脈沖。當P3口寫入高電平后，它們被內部上拉為高電平，并用作輸入。在FLASH編程和校驗時，P1口作為高八位地址接收。片內振蕩器和時鐘電路管腳說明：VCC：供電電壓。全靜態(tài)工作：0Hz24MHz 　　該器件采用ATMEL高密度非易失存儲器制造技術制造，與工業(yè)標準的MCS51指令集和輸出管腳相兼容。第一個數(shù)碼管顯示所采集的是哪一路，哪個通道。對于單點溫測儀表，主要采用傳統(tǒng)的模擬集成溫度傳感器，其中又以熱電阻、熱電偶等傳感器的測量精度 高，測量范圍大，而得到了普遍的應用。某些增強型集成溫度控制器(例如 TC652/653)中還包含了 A/D 轉換器以及固化好的程序，這些工藝與智能溫度傳感器有某些相似之處。自18世紀工業(yè)時代以來，工業(yè)革命對能否控制，發(fā)送顯示溫度有著絕對的聯(lián)系。t because when heating and burned, but can39。 C, in 10 ~ + 85 176。 two 16 timer and MCS 51 patibleTypical products have AD590 AD592, TMP17, LM135, integrated temperature controller. Analog integrated temperature controller mainly include temperature control switch, programmable temperature controller, a typical product have LM56, AD22105 and MAX6509. Some increase strength type integrated temperature controller (for example TC652/653) also contains the A/D converter and cure good sequence, this process with the intelligent temperature sensor some similarities. But it is not its system, work by micro processing device control, this is the main difference between. Intelligent temperature sensor. intelligent temperature sensor (also called digital temperature degrees sensor) is in the mid 1990s launch. It is microelectronics technology, puter technology and the dynamic testing technology (ATE) crystallization. Intelligent temperature sensor internal contain temperature sensor, A/D converter, signal processor, memory (or registers) and interface circuit. Some products still take multiplexer, central control system device (CPU), random access memory (RAM) and read only memory (ROM). Intelligent temperature sensor is characteristic of temperature data and relevant can output the temperature control of the quantity, adaptation various micro controller (MCU)。 level 3 program memory locks sake.RST: reset input. When oscillator reset device to keep RST feet high level two machine cycle time.ALE/PROG: when access external storage, address latch allows the output level of the position for latch address byte. During the FLASH programming, this pin for input programming pulse. In peacetime, the ALE with a constant frequency cycle output is the pulse signal, the frequencies of the 1/6 oscillator frequency. So it can be used against external output pulse or used for timing purpose. However it is: whenever used for external data storage, will skip a ALE pulse. If you want to ban the ALE output can be in SFR8EH address for 0. At this time, only by performing the ALE MOVX, MOVC instruction is ALE to take effect. In addition, the pins were slightly up. If microprocessor in external execution ALE, buy a ban is invalid./ PSEN: external program memory choice of munication number. By external program memory in during the instruction fetch, each machine cycle twice /PSEN effective. But on a visit to external data storage, the two effective/PSEN signals will not appear./ EA/VPP: when/EA keep low levels in this period, the external program memory (0000H FFFFH), whether have internal program memory. Note encryption method 1, / EA will RESET for internal focus。(3) programmable resolution for the 9 ~ 12, the corresponding can distinguish respectively ℃, the temperature of ℃ and ℃, by ℃。Target 139。此種傳感器具有功能單一(僅測量溫度)、 測溫誤差小、 價格低、 響應速度快、 傳輸距離遠、 體積小、功耗低，適合遠距離測溫、控溫，不需要進行非線性校準，外圍電路 簡單。智能溫度傳感器的特點 是能輸出溫度數(shù)據(jù)及相關的溫度控制量，適配各種微控制器(MCU)。多點溫度測量儀表，相對與單點的測量精度有一定的差距，雖然實現(xiàn)了多路溫度的測控，但價格昂貴。多線連接方案的框圖如“圖11”所示 DS1820DS1820DS1820DS1820AT89C51單片機顯示單元按鍵控制單元 圖11 DS1820多線連接方案AT89C51是一種帶4K字節(jié)FLASH存儲器（FPEROM—Flash Programmable and Erasable Read Only Memory）的低電壓、高性能CMOS 8位微處理器，俗稱單片機。4K字節(jié)可編程FLASH存儲器 　　5個中斷源 　　在FIASH編程時，P0 口作為原碼輸入口，當FIASH進行校驗時，P0輸出原碼，此時P0外部必須被拉高。在給出地址“1”時，它利用內部上拉優(yōu)勢，當對外部八位地址數(shù)據(jù)存儲器進行讀寫時，P2口輸出其特殊功能寄存器的內容。在FLASH編程期間，此引腳用于輸入編程脈沖。 /PS