Computer (the magic box?)

 

What is computer?

Computer is an electronic device operating under the control of instructions stored in its own memory,  that accepts data,  process the data, produce results, and store the results for future use.

There are a few types of computers which are supercomputers, mainframes, personal computers, mobile computers and devices and embedded computers.

but what are those? let's start with supercomputers
 

What is Supercomputer ? 

 A supercomputer is the fastest, most powerful,  most expensive computer and used for very complex, sophisticated job such as nuclear  research,calculating weather patterns, petroleum exploration, online banking, automotive design.

 

 SDSC's Gordon Supercomputer

Next, what about mainframe?

A mainframe is a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously (multi-user) and storing tremendous amounts of data, instructions and information.It can store tremendous amounts of data, instructions, and information; enterprises are able to bill millions of customers, prepare payroll for thousands of employees, and manage thousands of item in inventory.

So now you know what are supercomputers and mainframes, next category is personal computers, but i am sure everyone knows what is personal computer (you might using it right now)

  *listening to music while reading this post*

Personal computer is a computer that can perform all its input, processing, output and storage activities by itself. Two types of personal computers are desktop computers, and notebook computers. Mobile computer is a personal computer (that can perform all of its input, processing, output, and storage activities by itself) that you can carry from place to place
 
Next, is the mobile device which is a computing device small enough to hold in your hand.