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Embedded Operating system
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GROUP NO. 3 HAMZA MEHMOOD AHMED SAAD
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Introduction History Characteristics Advantages Architecture & Design Applications Questions
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An embedded system is a special- purpose computer system, designed to perform one or a few dedicated functions. The operating system which controls these embedded system is called embedded operating system. Embedded operating system is designed to be very compact and efficient.
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Examples WINDOWS EMBEDDED CE: It is a GUI that is designed for doing work on several devices by using windows in that device.
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Examples Blackberry OS: It runs on hand held devices supplied by RIM. It easily synchronize data wirelessly with devices.
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Examples: Google android : It is an OS designed by Google for mobile devices. Android covers a vast range of applications i.e. wifi access, emails, video sharing, access to google apps and so on.
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Examples: i-phone OS: It is an OS designed by “apple” for using in i-phone and i-pads. With this OS you can manage all mobile functions by just a single tap of finger.
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Introduction History Characteristics Architecture & Design Applications Qusetions
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History In the earliest years of computers in 1930 – 40s, computers were sometimes dedicated to a single purpose task. One of the first recognizably modern embedded system was the Apollo Guidance Computer.Apollo Guidance Computer
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History Since these early applications in the 1960s, embedded systems have come down in price and there has been a dramatic rise in processing power and functionality. The first microprocessor for example, the Intel 4004 was designed for calculators. microprocessorIntel 4004calculators
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Introduction History Characteristics Advantages Architecture & Design Applications Questions
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Characteristics (1/3) Special-purpose –Typically, is designed to execute a single program, repeatedly –It used to be single- purpose –Now, multi- functioned, but single-purpose
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Characteristics (2/3) Tightly constrained –Low cost –Simple systems –Fewer components based –Performs functions fast enough –Minimum power
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Characteristics (3/3) Hardware and software co-exist –The software written for embedded systems is often called firmware –Is stored in read-only memory or Flash memory chips rather than a disk drive
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Introduction History Characteristics Advantages Architecture & Design Applications Questions
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Advantages It is economic It is power and time saving Abstracts away complexities of processor Optimize use of system resources Maintenance is easy Processes are completed in minimum processor cycles
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Advantages Efficiency of work is maximized Provides solid infrastructure for an application Improves developer productivity Work become easy Memory constraint Easily programmable
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Introduction History Characteristics Advantages Architecture & Design Applications Questions
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CPU Platforms It’s different from desktop computer. CPU Architectures: ARM, AVR, Black fin, Cold fire, eZ8, FR-V, H8, HT48, M16C, MIPS, PIC, PowerPC, R8C, SHARC, ST6, SuperH, etc.
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Differences from usual computers Several components of different functionalities are found in embedded system software Response at time. All components use less the memory.
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User Interface Embedded systems range from no user interface at all dedicated only to one task to full user interfaces similar to desktop operating systems in devices such as PDAs.
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Introduction History Characteristics Architecture & Design Applications Questions
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Applications:
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Robots
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