20-10-2012, 04:00 PM
EMBEDDED SYSTEM
52808306-Introduction-to-Embedded-Systems.pptx (Size: 428.37 KB / Downloads: 25)
Introduction to Embedded System
Hardware + Software
The hardware of a general-purpose computer is typically pre-defined
-CPU, monitor, keyboard, mouse, CD-ROM…
The hardware of an embedded system is generally custom-built for the system’s specific purpose
An example: mobile phone
-A great deal of communication protocol processing
-Voice processing for sending and receiving speech signal
Why is it unique?
Computation is subject to physical constraints such as timing deadlines, memory restrictions, and power consumption requirements.
The traditional abstraction of separating software from the
hardware and environment does not work.
Hardware, software, and control are integrally intertwined.
Designers must understand both hardware, software, and
control.
Anti-Lock Break System Using Embedded System
Anti-lock brake system (ABS): pumps brakes to reduce skidding.
Automatic stability control (ASC+T): controls engine to improve stability.
ABS and ASC+T communicate.
ABS was introduced first---needed to interface to existing ABS module.