Different types off computer systems

base unit is the main part of the pc that lies flatthis main box where you insert the cds and/ordisks sometimes incorreclty called the processor the monitor or the hard drive

laptop

also called a notebook computer is small personal computer desgin for protability usually all of the
interface hardware that is needed to operate the laptop such as usb port previously parallel and serial ports graphics cards sound channel etcare built into single unit

Netbooks (also called mini notebooks or subnotebooks) are a rapidly evolving category of small, light and inexpensive laptop computers suited for general computing and accessing web-based applications; they are often marketed as "companion devices," that is, to augment a user's other computer access Walt Mossberg called them a "relatively new category of small, light, minimalist and cheap laptops. By August 2009,  called netbooks "nothing more than smaller, cheaper notebooks

 

Mobile phone 

A mobile phone allows calls into the public switched telephone system over a radio link. Early mobile phones were usually bulky and permanently installed in vehicles; they provided limited service because only a few frequencies were available for a geographic area. 

Now a days mobile phones can surf the web an also can be use as a mp3 also you can watch videos and can play games eg snake 

 

 GAME CONSOLE A handheld game console is a lightweight, portable electronic device with a built-in screen, game controls and speakers. Handheld game consoles are run on machines of small size allowing people to carry them and play them at any time or place

A tablet personal computer or tablet PC is a tablet sized computer that also has the key features of a full size personal computer

 

network server is a computer designed to process requests and deliver data to other (client) computers over a local network or the Internet. Network servers typically are configured with additional processing, memory and storage capacity to handle the load of servicing clients. Common types of network servers include:

Web servers

proxy servers

FTP servers

online game servers

 

Embedded devices are small programmable chips that can be programmed to execute certain orders
the control panel in an elevator is an embedded device
thermostat in your Air conditioning unit that senses the temperature and runs/switch off the A/C according to the surrounding temp
thermostat in your coffee machine that senses the temp of coffee/water mixture
Auto sliding doors that senses the temp of people approaching the door giving the command to a mechanical accessories to slide open then close after certain delayalot of things that run without human beings intervention are generically described as Embedded devices