An embedded system is a special purpose system, in which the computer is encapsulated by the device it controls. Unlike a general purpose system an embedded system will only perform some particular tasks. These are actually systems which are developed for performing some predefined tasks. Embedded systems may vary from small hand held devices like PDAs to large devices like robotic arms.
Embedded systems are generally control systems which are a part of another device and they can handle the entire operation of that device. They are generally electronic chips with CPU, memory,I/o ports and are programmable.
An embedded quotation is a quotation that is worked into the sentence that contains it.
There are many places where one may find out more about embedded system design. Once can look at Wikipedia for a simple definition, and then read blogs or as in forums for further information.
An Embedded Architecture is a board that is implemented as the embedded system when programmed an embedded architecture is also a target board on which a uProcessor is plugged
I cannot imagine a modern embedded system that is not built on a printed circuit board.
A ROM chip