Classification Of Computer

Classification of Computer  

Nowadays computers are classified based on there mode of use.  According to this classification, computers are classified as :-

1. Notebook Computers 
2. Personal Computers 
3. Workstations 
4. Super Computers 
5. Super Computers 
6. Client & Server Computers 
7. Hand Held Computers

Notebook Computer (Laptop) :-  Notebook Computers are portable computers mainly meant for use of people who need computing resource whenever they go. Their size is about 8x11 inches notebook or smaller their weight is around 2kg. 

• A Notebook Computer uses almost full size keyboard, a flat screen liquid crystal color display and touchpad.
• It also has a hard disk, a CD and DVD drive and ports for connecting peripheral devices such as printers, pendrive . etc.
• Users of most Laptop can connect there laptop to network and download data from other computer or excess the internet.
• Design of most Laptop enables there users to establish wireless connectivity with other stationary computer using Wi-Fi or Bluetooth. 
• We can use laptop even at places where there is no external power sources available because they can operate with chargable batteries.
• Processing capabilities of a Laptop is normally as good as ordinary PC because both use same type of processor such as intel premium process.
• Laptop is more expensive than that of PC.
  

Personal Computer :-  A Personal Computer is non portable general purpose computer and is used by one person at a time. A PC have several chips - RAM chip, CPU chip, ROM chip, IO handling chip, etc assembled on a main circuit board called Motherboard or system board. System configuration of PC varies depending on there users. However the most commonly used configuration consists  of a system unit, a moniter, a keyboard, and a mouse. System unit is in the form of bar consists of main circuit board. Hard Disk storage, a CD/DVD, any special add-on-cards (such as network interface cards)  and for connecting peripheral devices. System unit of a PC also has input/output parts for connecting external input/output (I/O) or storage devices. 

Some popular operating system for PC are MS DOS, MS Window, UNIX, LINUX, etc. These operating system support multitasking enabling a user to switch between task. 

Some major PC manufacturer are HP, ASUS, MAC Book, INTEL, LENEVO, HCL, etc.

Workstations :-  Workstation is powerful desktop computer design to meet computing need of engineers, architecture and other professional who need greater processing speed, large storage and better graphics display facility than the normal PC's.

Examples - 

• Workstations are normally used for Computer Aided Design (CAD).
• Simulation of Complex, scientific, and engineering problems. 
• Virtualization of result of simulation. 
• Multimedia applications such as special audio, video effects in movies or televisions programs. 
• A Workstation is similar to a high performance PC and typically only one person uses it at a time. 

 Characterstics Differenciate Between Workstation and PC :- 

1. Processing Power :- A Workstation is similar to high perfo
   rmance and typically only one person uses it at a time.                                                                                                                                   Processing power of a workstations is more than that of an average PC.
2. Storage Capacity:-  Workstations have larger main memory or compared to PC's. Hard disk capacity of a work station is also much more as compared to PC. 
3. Display Capacity :- Most workstations have a large screen monitor capable of displaying high resolution graphics. Hence color and graphics adapter called optional in PC's are available by default in workstations PC's normally use monitors having smaller screen. 
4. Operating System :-  Unlike PC's that run any desktop Operating System all workstation generally run UNIX and LINUX Operating System. 

Mainframe Slots :- Workstation usually have more expansion slot than PC's providing greater flexibility of supporting additional functionality.                                                                                Workstations are more coastly than than PC's. Some manufacture of manufacture of workstations are IBM, HP, SUN Microsystem.            

Mainframe System :- Several Organization such as banks, insurance companies, hospitals, railways, etc need online processing of large number of transaction and require computer system having large number of data storage and processing capabilities. Mainframe systems are used for meeting the computing need of such organisation.