Embedded systems
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An embedded system is a combination of computer hardware and software designed to perform a specific function. It is designed to perform real-time processing within the constraints of its function. Embedded systems control many common devices and are found in applications like microwave ovens, air conditioners, mobile phones, and vehicle security systems. They have seen tremendous growth in sectors like automobiles, aerospace, and mobile communications.
Embedded systems
- 1. BY N.DHANALAKSHMI(E.C.E) S.I.T
- 2. An embedded system is a combination of computer hardware and software, and perhaps additional mechanical or other parts, designed to perform a specific function. A good example is the Microwave oven.
- 3. Agenda Introduction History, APPLICATIONS Market is Here! What is EMBEDDED SYSTEM
- 4. An embedded system is a special-purpose computer system designed to perform one or a few dedicated functions, often with real- time computing constraints. It is usually embedded as part of a complete device including hardware and mechanical parts. In contrast, a general-purpose computer, such as a personal computer, can do many different tasks depending on programming. Embedded system control many of the common devices that we use today
- 5. In the earliest years of computers in 1930 – 40s, computers were sometimes dedicated to a single purpose task
- 7. Embedded Systems has witnessed tremendous growth in the last one decade. Almost all the fast developing sectors like automobile, aeronautics, space, rail, mobile communications, and electronic payment solutions have witnessed increased use of embedded technologies.
- 8. Air conditioner ATM machine Battery charger Digital camera DVD player Fax machine Home security system Mobile phone Modem
- 9. • Rocket & satellite control • Energy production control • Telephone switches • • Air Traffic Control • GSM(Global System for Mobile)
- 10. Introduction on GSM In recent years, vehicle thefts are increasing at an alarming rate around the world. People have started to use the theft control systems installed in their vehicles. Low cost vehicle theft control scheme using an inbuilt microcontroller.
- 12. Microcontroller The AT89C51 is a low-power, high performance CMOS 8-bit microcontroller with 4K bytes of flash programmable & erasable read only memory (PEROM). By combining a versatile 8-bit CPU with flash on a monolithic chip, the Atmel AT89C51 is a powerful microcomputer which provides a highly-flexible and cost effective solution to many embedded control applications.
- 15. The LCD is connected to Port2 (P2.0 to P2.7) of the microcontroller. It is used to display.(either error or accepted). Variabmessagele resistor connected to Pin3 of LCD, is used to control the brightness of LCD. A liquid crystal display is a low cost, low power device capable of displaying text and images.
- 17. Reactive and real- time Reactive: Continually reacts to external events Real-time: Must compute certain results in real-time