22 nd October 2008. Embedded System Design. By Santosh N.Gudge. Definition. Embedded System : Any Device that includes a computer but is not itself a general-purpose computer.
**Power consumption is critical in battery-powered devices.
*PDA, Set-top boxes, video games etc
*flight control, Nuclear reactors
*Radar, Sonar, DVD players
*Cellular phones, Internet appliances.
* what is word size of the CPU? Size of memory?
*Faster hardware or Cleverer Software?
*Turn off unnecessary logic ? Reduce Memory accesses?
*overall speed, deadlines.
*output as a function of input.
>time required to compute output;
>size, weight , etc;
>start from most abstract description;
>work to most detailed.
>work from small components to big system.
>Many systems have complex embedded hardware and software.