28-06-2012, 03:25 PM
EMBEDDED SYSTEM
EMBEDDED SYSTEM2.ppt (Size: 2.05 MB / Downloads: 201)
introduction to embedded system
Embedded Systems are the Microcontroller based electronics systems which are designed for specific task. Ex-Automatic Washing Machines, Robots, Electronic Cash Register, Mobile Phones etc. Every Device is converting into automative, there the role of Embedded Technology.
It is embedded as part of a complete device often including hardware and software parts.
Timer/Counter
The 8051 has 2 timer/counter . They can be used either as timers to generate delay or as counters to count events happening outside the controller.
e.g., traffic light
General 8051 has 2 timer:
Two 16-bit timer
The counters are divided into two 8-Bit registers called the timer low (TL0, TL1) and high (TH0, TH1) bytes.
All counters action is controlled by bit states in the timer mode control register (TMOD), the timer/counter control register (TCON), and certain program instructions.
Advantages of embedded system
Designed to do a specific task.
Simplified system hardware.
Less costly.
In the form of small computerized parts in larger devices.
Required limited computer hardware resources.
Little memory and small keyboard or screen.
EMBEDDED SYSTEM2.ppt (Size: 2.05 MB / Downloads: 201)
introduction to embedded system
Embedded Systems are the Microcontroller based electronics systems which are designed for specific task. Ex-Automatic Washing Machines, Robots, Electronic Cash Register, Mobile Phones etc. Every Device is converting into automative, there the role of Embedded Technology.
It is embedded as part of a complete device often including hardware and software parts.
Timer/Counter
The 8051 has 2 timer/counter . They can be used either as timers to generate delay or as counters to count events happening outside the controller.
e.g., traffic light
General 8051 has 2 timer:
Two 16-bit timer
The counters are divided into two 8-Bit registers called the timer low (TL0, TL1) and high (TH0, TH1) bytes.
All counters action is controlled by bit states in the timer mode control register (TMOD), the timer/counter control register (TCON), and certain program instructions.
Advantages of embedded system
Designed to do a specific task.
Simplified system hardware.
Less costly.
In the form of small computerized parts in larger devices.
Required limited computer hardware resources.
Little memory and small keyboard or screen.