Before the Desktop PCs were invented a computer was a 10X10 ft. room having many large vaccum tubes and the programming was as complex as punching a card with binary code and feeding it to the computer. That was the vacuum tube era!
Now we are enjoying VLSI era, where we have Desktops, laptops , PDAs. Soon this concept will also be replaced by embedded technology. SoC, yess System on Chip! a 1x1 cm chip will be manufactured as a standalone computer which is able to interface input devices via bluetooth and which will show its magic on LCD also operated via bluetooth.
What is a form of server existing now? It is a normal pc with extraordinary processing capacity and huge storage. Server is essentially a piece of software which runs on this type of machine.
Field of embedded systems is ever challenging. We could see a web server on tiny silicon chip which has all capabilities of current server, in coming 5 years. Microcontrollers manufacturing is a boom in industry. The evergreen performer AVR, reliable PIC, and the powerfull ARM are the main players in embedded technology. Following links will give you an idea what is goin on in the field of embedded servers.
http://members.home.nl/bzijlstra/hardware/hardware.htm
http://www.ethernut.de/en/hardware/enut3/index.html
http://members.home.nl/bzijlstra/
http://stores.ebay.com/Avcom-TEC
Added to it the wireless technologies like bluetooth, Wi-max, Wi-fi we are not far away from the SoC era!
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