嵌入式系统ppt课件

iPhone®
Went on sale in June 2007
One Samsung ARM1176
application processor core
Memory capacity: 8 – 16 GB
Display: 3.5 inch widescreen multitouch
Operating system: MAC OS X
Embedded system: any device that includes a programmable computer but is not itself a general-purpose computer With OS (use microprocessors) Without OS (use microcontrollers)
3 output ports, 6 wire digital platform
100 x 64 pixel LCD graphical display
Sound channel with 8-bit resolution
Stores multiple programs
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应用范例介绍二
嵌入式系统 概论
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What is this?
பைடு நூலகம்
The Von Neumann Architecture
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What is Embedded ?
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什么是嵌入式系统?
计算机，假装自己不是计算机…… (Stephen A. Edwards)
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为什么要嵌入?
為何计算机要嵌入？
Take advantage of application characteristics to optimize the design: Do not need all the general-purpose bells and whistles
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计算机的演进
log (people per computer)
GSM: Quad-band
Wireless data: WiFi, EDGE, Bluetooth
Camera: 2 Mega pixel
Audio and video playback
Talk time: 8 hrs
Standby time: 250 hrs
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应用范例介绍三
• ATI “Hollywood” processor handles the SYNC.
它具备了下列的特性： 设计的目的，在于执行特定的功能 以微电脑与周边构成核心 严格的时序与稳定度要求 全自动操作循环
嵌入式系统为一种计算机软件与硬件的综合体，特别强调「量身定做」 的原则，基于某一种特殊用途上，针对这项用途开发出截然不同的系 统，是所谓的客制化(Customized)系统。
32-bit ARM7 microprocessor
256 Kbytes FLASH, 64 Kbytes RAM
Bluetooth wireless communication using NXT software only.
USB 2.0 port
4 input ports, 6 wire digital platform
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Definition
An embedded system is a special-purpose system in which the computer is completely encapsulated by the device it controls
An embedded system performs pre-defined tasks, usually with very specific requirements
基本架構仍然相同
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什么是嵌入式系统?
嵌入式系统硬件之主要组成
P or C
RAM
Flash Memory
BUS Interconnect
Input Devices
Output Devices
ASIC ASIC
以ARM平台之嵌入式系統為例
嵌入式系统之硬件组成基本组件：
微处理机(Microprocessor)/微控制器(Microcontroller)
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Embedded systems in everything
应用范例 LEGO 机器人
• The LEGO Mindstorms® is a robotic building system consisting of
• The NXT Intelligent Brick: the brain of the system • Sensors and servo motors • LEGO TECHNIC Elements • Programming software
Mainframe Minicomputer Workstation
year
PC Laptop PDA
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Streaming information to/from physical world
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Application
办公设备、建筑物设备、制造和流程控制、医疗、监视、维生设备、交通运 输、通讯业、银行金融业、测试及诊断系统、其他…
内存(Memory)
特殊用途之集成电路芯片(ASIC)
输入与输出(Input/Output, I/O)接精口选与ppt 输入与输出装置
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Definition
Embedded Systems 的定义无论是学界或者业界，都有相当多种说法， 应用的范畴更是远超出一般人的想象
根据英国电机工程师协会的定义：嵌入式系统为控制、监视或辅助设 备、机器或甚至工厂运作的装置
• Wii • CPU – IBM “Broadway”
USB 2.0 插槽
SD Card 插槽
Flash 記憶體
Broadway CPU
擴充記憶體 GDDR3 64MB
RTC
• Runs at 729 MHz
• Similar to the chip found in the GameCube,
but almost twice as fast Wii 遙控