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Embedded Systems

Mohammad A. Gowayyed

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Acknowledgment

• Some slides are taken from– Dr Moustafa Amin’s slides

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Embedded System

• What is an embedded system?

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Who builds Smart Cars?

• Mechanical and production engineers• Electrical engineers• Software engineers

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Toyota brakes problem

• A total of 133,000 Prius vehicles in the U.S. and 52,000 in Europe are to receive software update.

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Properties of Embedded Software

• Real time applications– Delay should be bounded

• Limited resources– Power– Memory– CPU

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Smart Phone

• What is a smart phone?– Phone– Computer - smart

• Allows for user programs– Calendar– Games

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Components of Mobile Ecosystem

• Network– GSM /CDMA – Slow– GPRS – Faster– UMTS (3G) -

• Handset– Hardware– OS

• Services– SMS– Bluetooth– Java

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Generations of Mobile Communication

• 0G• 1G• 2G• 2.5G• 3G• 4G

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Mobile Phone Evolution• 1986:

– Suitcase size– Battery 800g!

• 1990:– Halved in size– Again in 1994

• Future talking about embedding phones in body• 2000: Mobile phones outsold PCs for the first time (450 Millions vs 120

millions!)

• 2005: 200 millions per quarter!

• 2011: 427 millions only at 4Q11, total of 1,546 millions at 2011 and 5.9 billions mobile subscribers (87 % of the world population)

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Manufacturers

• Nokia• Samsung• Apple• Motorola

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Manufacturers market share

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Feature of Good OS

• Resource limited– Battery– Memory– CPU

• Robustness• User interface (for small screen)• Libraries• Development tools

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Available OS’s

• Symbian• Linux• Windows CE• Palm OS• Android• iPhone OS• Platforms– J2ME

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Your turn!

• Questions?• Suggestions?