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
練習并掌握多任務實時操作系統(tǒng)下Task 調(diào)度、Task 間主要通信手段(信號量、消息隊列等)、RISC 處理器 I/O 端口控制等內(nèi)容,并形成嵌入式實時應用軟件的良好編程習慣。創(chuàng)建多Task,為每個Task 創(chuàng)建私有的Message Queue,每個Task 只通過自己的私有Message Queue 接收消息;Task 間消息通信通過向?qū)Ψ剿接蠱essageQueue 發(fā)送消息完成。 Task1:管理Task。負責系統(tǒng)啟動時同步系統(tǒng)中其他Task 的啟動同步,利用信號量的semFlush()完成。同時接收各Task 的告警信息,告警信息需編號以logmsg 方式輸出。本task 負責系統(tǒng)結束時的Task 刪除處理。 Task2:console 命令行接收Task。接收并分析console 發(fā)來的命令行及參數(shù)。自行設置5 種以上命令,并根據(jù)命令的內(nèi)容向Task3 或/及Task4 發(fā)送激勵消息。同時實現(xiàn)系統(tǒng)退出命令,使系統(tǒng)采用適當方式安全退出。收到非法命令向Task1告警。 Task3:Led 控制Task。接收Led 控制消息(命令),自定義Led 顯示方式表現(xiàn)命令執(zhí)行情況。本task 應負責led 相關I/O port 初始化。收到非法led 控制命令向Task1 告警。 Task4:console 輸出Task。接收需打印輸出的字串消息(命令),輸出到console。收到長度為0 或超常字串向Task1 告警。
上傳時間: 2016-04-12
上傳用戶:iswlkje
實現(xiàn)最優(yōu)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(xiàn)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(tǒng)應具備如下的功能: 1.初始化。從終端(文件)讀入字符集的數(shù)據(jù)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
自己動手自做美麗炫目的萬花筒,程序引腳齊全,動動看!
標簽: 自己動手
上傳時間: 2016-06-09
上傳用戶:181992417
C51實用程序(45個) I/O、定時器、中斷、看門狗、計數(shù)器、軟件AD、VB串口、93c06驅(qū)動、24c02系列驅(qū)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(shù)據(jù)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(nèi)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(nèi)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
adctest S3C44B0X內(nèi)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(nèi)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: 2016-07-05
上傳用戶:wanghui2438