一個單片機應用系統的硬件電路設計包含兩部分內容:一是系統擴展,即單片機內部的功能單元,如ROM、RAM、I/O、定時器/計數器、中斷系統等不能滿足應用系統的要求時,必須在片外進行擴展,選擇適當的芯片,設計相應的電路。二是系統的配置,即按照系統功能要求配置外圍設備,如鍵盤、顯示器、打印機、A/D、D/A轉換器等,要設計合適的接口電路。
上傳時間: 2016-03-13
上傳用戶:gaojiao1999
The PCI Local bus concept was developed to break the PC data I/O bottleneck and clearly opens the door to increasing system speed and expansion capabilities. The PCI Local bus moves high speed peripherals from the I/O bus and places them closer to the system’s processor bus, providing faster data transfers between the processor and peripherals. The PCI Local bus also addresses the industry’s need for a bus standard which is not directly dependent on the speed, size and type of system processor. It represents the first microprocessor independent bus offering performance more than adequate for the most demanding applications such as full-motion video.
標簽: bottleneck developed the concept
上傳時間: 2014-12-03
上傳用戶:ikemada
The PCI Local bus concept was developed to break the PC data I/O bottleneck and clearly opens the door to increasing system speed and expansion capabilities. The PCI Local bus moves high speed peripherals from the I/O bus and places them closer to the system’s processor bus, providing faster data transfers between the processor and peripherals. The PCI Local bus also addresses the industry’s need for a bus standard which is not directly dependent on the speed, size and type of system processor. It represents the first microprocessor independent bus offering performance more than adequate for the most demanding applications such as full-motion video. Hardware reference
標簽: bottleneck developed the concept
上傳時間: 2016-03-18
上傳用戶:極客
The PCI Local bus concept was developed to break the PC data I/O bottleneck and clearly opens the door to increasing system speed and expansion capabilities. The PCI Local bus moves high speed peripherals from the I/O bus and places them closer to the system’s processor bus, providing faster data transfers between the processor and peripherals. The PCI Local bus also addresses the industry’s need for a bus standard which is not directly dependent on the speed, size and type of system processor. It represents the first microprocessor independent bus offering performance more than adequate for the most demanding applications such as full-motion video. User Manual
標簽: bottleneck developed the concept
上傳時間: 2014-01-15
上傳用戶:努力努力再努力
基于MATLAB/Simulink的汽車ABS半實物仿真,本文所研究的是一種基于MATLAB/Simulink的汽車防抱死剎車系統(ABS)的半實物仿真的方法。本方法利用Simulink提供的模型建立車輛的傳動系模型、自動變速箱模型和ABS模型等。所建成的這套半實物仿真系統既可在軟件環境下對汽車進行仿真,也可以通過I/O接口與ABS系統相連接以觀察系統的仿真效果,檢驗控制算法的合理性。通過合理改變相應參數,本系統還可以模擬實際汽車在不同工況下的工作情況,極大提高了汽車電子設備的研發工作的效率。同時,本系統也可用于教學演示。
上傳時間: 2016-05-10
上傳用戶:xuanchangri
實現最優二叉樹的構造;在此基礎上完成哈夫曼編碼器與譯碼器。 假設報文中只會出現如下表所示的字符: 字符 A B C D E F G H I J K L M N 頻度 186 64 13 22 32 103 21 15 47 57 1 5 32 20 57 字符 O P Q R S T U V W X Y Z , . 頻度 63 15 1 48 51 80 23 8 18 1 16 1 6 2 要求完成的系統應具備如下的功能: 1.初始化。從終端(文件)讀入字符集的數據信息,。建立哈夫曼樹。 2.編碼:利用已建好的哈夫曼樹對明文文件進行編碼,并存入目標文件(哈夫曼碼文件)。 3.譯碼:利用已建好的哈夫曼樹對目標文件(哈夫曼碼文件)進行編碼,并存入指定的明文文件。 4.輸出哈夫曼編碼文件:輸出每一個字符的哈夫曼編碼。
上傳時間: 2014-11-23
上傳用戶:shanml
描述了一個8位二進制輸入的DAC 文章中包含源代碼 采用數字化技術、在測控系統中用IP核實現D/A轉換,并且在1片可編程邏輯器件中實現。它不受溫度的影響,既可保持高分辨率,又可降低對電路精度和穩定度的要求,并減少元件的數量。
上傳時間: 2016-06-10
上傳用戶:王楚楚
C51實用程序(45個) I/O、定時器、中斷、看門狗、計數器、軟件AD、VB串口、93c06驅動、24c02系列驅動、7219、20045、軟件陷阱、串口中斷、碼值轉換、AVR通訊、IIC、DS1302、DS1820、SPI、1602、12232、12864、T6963、1330、PC鍵、鍵盤輸入法、智能化、飛機游戲、貪吃蛇、多級菜單實例等
上傳時間: 2016-06-17
上傳用戶:hasan2015
熟悉D/A轉換芯片的使用 把待轉換的數據送D/A芯片TLC5615,開啟D/A轉換 用萬用表或者示波器觀察輸出口(CON36)的電壓 硬件要求:撥碼開關S8全部置ON 其他撥碼開關全部置O
上傳時間: 2013-12-15
上傳用戶:zxc23456789
adctest S3C44B0X內置A/D轉換器應用實例; einttest S3C44B0X外部中斷實例; flashtest flash讀寫實例; Helloworld Helloworld程序; iictest IIC接口運用實例; iotest I/O應用實例——矩陣式鍵盤掃描; rtctest S3C44B0X內置RTC應用實例; Timertest 定時器應用實例; uarttest UART串行口應用實例; ucos_ex1 uc/os-II運用之一:多任務; ucos_ex2 uc/os-II運用之二:任務間通訊; ucos_ex3 uc/os-II運用之三:中斷服務程序;
標簽: Helloworld S3C44B0X flashtest einttest
上傳時間: 2014-01-13
上傳用戶:xc216