Switching regulators are of universal interest. LinearTechnology has made a major effort to address this topic.A catalog of circuits has been compiled so that a designengineer can swiftly determine which converter type isbest. This catalog serves as a visual index to be browsedthrough for a specific or general interest.
針對51單片機系統中常用的A/D轉換器價格高、精度低的缺點，介紹TI公司的16 位的帶有I2C串行接口的A/D轉換器ADS1110的工作原理，給出ADS1110與AT89C51單片機系統的接口電路和軟件設計。實踐證明，ADS1110具有高性價比和實用性。
Abstract:
According to the disadvantages of high expense and low accuracy of the general A/D converter used in MCS51 microchip system,the principle and working process of a high accuracy 16-bit A/D conversion ADS1110 which has I2C bus and belongs to TI Company are proposed here as well as the interface of ADS1110 to AT89C51 and software list.It is proved to be high performance index and practicability.
在需要實時大量輸入漢字的顯示控制處理應用中，利用傳統單片機實現顯示控制的設計方法是較難實現的。帶漢字字庫的液晶模塊的使用使得小容量ROM單片機的大量漢字信息輸入與顯示成為可能。提出了針對漢字字庫編碼的二級索引拼音輸入檢索方法,介紹了以ST7920作為控制器的帶漢字字庫的液晶顯示模塊的接口方法及漢字顯示和控制原理，給出了通用計算機鍵盤在單片機中的串行接口，采用該技術可大大增強單片機的漢字輸入功能。為小容量ROM單片機的大批量漢字信息處理提供了一種漢字輸入解決方案。
Abstract:
It is difficult to realize Chinese characters input method based on the embedded system by using the traditional design method of display control. It is possible to input and display Chinese characters based on the embedded system with the ROM of small content by using the LCD module with Chinese characters.Chinese characters input method of the quadric index recall in allusion to Chinese characters code is brought forward.The interface and the principle of Chinese characters display control based on the LCD module controlled with the ST7920 is introduced too.The serial interface of the computer keyboard in common use and the embedded system is given at the same time. It can enhance the embedded system function of Chinese characters input by using this technology, and provide a kind of Chinese characters input scheme for the embedded system with small capacity ROM.
基于單片機的除塵控制器的設計:介紹通用控制儀的硬件組成和軟件設計,闡述了系統的性能指標和功能特點。該產品功能完善,可靠性高,具有很好的應用前景。關鍵詞: 除塵器;通用控制儀;單片機;系統設計
Abstract: The hardware structure and the software design are introduced in this paper, and the performance index and the features of the system are expounded. It has comp rehensive functions, high reliability and good app lication.Key words: dust catcher; universal controller; microcontroller; system design
PLC TM卡開發系統匯編程序(ATM8051)
;***************** 定義管腳*************************SCL BIT P1.0SDA BIT P1.1GC BIT P1.2BZ BIT P3.6LEDI BIT P1.4LEDII BIT P1.5OK BIT 20H.1OUT1 BIT P1.3OUT2 BIT P1.0OUT3 BIT P1.1RXD BIT P3.0TXD BIT P3.1PCV BIT P3.2WPC BIT P3.3RPC BIT P3.5LEDR BIT P3.4LEDL BIT P3.6TM BIT P3.7;********************定義寄存器***********************ROMDTA EQU 30H;NUMBY EQU 61H;SLA EQU 60H;MTD EQU 2FH;MRD EQU 40H;TEMP EQU 50H;;ORG 00H;;index:MOV P1, #00H;MOV P2, #0FFHMOV MTD ,#00HCALL REEMOV R0,40HCJNE R0,#01,NO;MOV P2,#1CHLJMP VIMEN MOV P2,#79HACALL TOUCHRESET ;JNC NO ;CALL READTM ;CJNE A,#01H,NO;NOPMOV MTD, #00HCALL WEENOPMOV P2,#4AHSETB BZCALL TIMECLR BZMOV PCON, #0FFHVIME:CALL TIME1CALL TOUCHRESETJNC VIMECALL READTMCJNE A, #01H,VIME;NOPNOPNOPIII: MOV MTD,#00HCALL REECALL BBJNB OK,NO1LJMP ZHUNO1:MOV MTD,#10H
Radio frequency (RF) can be a complex subject to navigate, but it does not have to be. If you are just getting started with radios or maybe you cannot find that old reference book about antenna aperture, this guide can help. It is intended to provide a basic understanding of RF technology, as well act as a quick reference for those who “know their stuff” but may be looking to brush up on that one niche term that they never quite understood. This document is also a useful reference for Maxim’s products and data sheets, an index to deeper analysis found in our application notes, and a general reference for all things RF.
Radio frequency (RF) can be a complex subject to navigate, but it does not have to be. If you are just getting started with radios or maybe you cannot find that old reference book about antenna aperture, this guide can help. It is intended to provide a basic understanding of RF technology, as well act as a quick reference for those who “know their stuff” but may be looking to brush up on that one niche term that they never quite understood. This document is also a useful reference for Maxim’s products and data sheets, an index to deeper analysis found in our application notes, and a general reference for all things RF.
