EMBEDDED SYSTEMS SUCHITA M. DAKI.

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Presentation transcript:

EMBEDDED SYSTEMS SUCHITA M. DAKI

1.1 Definition Definition for: embedded system A combination of hardware and software which together form a component of a larger machine. An example of an embedded system is a microprocessor that controls an automobile engine. An embedded system is designed to run on its own without human intervention, and may be required to respond to events in real time. Source: www.computeruser.com/resources/dictionary

Application Areas • TV • stereo • remote control • phone / mobile phone • refrigerator • microwave • washing machine • electric tooth brush • oven / rice or bread cooker • watch • alarm clock • electronic musical instruments • electronic toys (stuffed animals,handheld toys, pinballs, etc.) • medical home equipment (e.g. blood pressure, thermometer)

Application Areas Medical Systems Office Equipment Tools Banking pace maker, patient monitoring systems, injection systems, intensive care units, … Office Equipment printer, copier, fax, … Tools multimeter, oscilloscope, line tester, GPS, … Banking ATMs, statement printers, … Transportation (Planes/Trains/[Automobiles] and Boats) radar, traffic lights, signalling systems, …

Application Areas Automobiles Building Systems Agriculture Space engine management, trip computer, cruise control, immobilizer, car alarm, airbag, ABS, ESP, … Building Systems elevator, heater, air conditioning, lighting, key card entries, locks, alarm systems, … Agriculture feeding systems, milking systems, … Space satellite systems, …

Microcontrollers Microprocessor Microcontroller CPU (on single chip) Microcontroller CPU + Timers + I/O (+RAM) (+ROM) Reduced chip count for board design Embedded system Today’s Technology: Surface Mount Device (SMD) Ball Grid Array (BGA)

Input and Output Required to communicate with outside world PC System: Keyboard Monitor Parallel port (printer port) Serial port + USB Embedded System: Sensors (e.g. in automobile: acceleration sensor, seat sensor) Actuators (e.g. in automobile: valves for airbags)

Input and Output Input / output device implementation can be: • Memory-mapped • I/O mapped (ports) • DMA (direct memory access)