Do you know the definition of breadboard?

Do you know the definition of breadboard?
From:http://www.htdcircuits.com/most-of-pcb-guys-don---039-t-know-the-definition-of-the-breadbaord.html
This post topic is breadboard.
In fact most of PCB guys don't know the definition of the breadbaord.
This also the aim of introducing this definition.a

A breadboard (or protoboard) is a construction base for prototyping of electronics.
If you have read our article of prototype PCBs.

Originally it was literally a breadboard, a polished piece of wood used for slicing bread.
But now it have changed its meaning.
Most of time its meaning prototype PCB.

In the 1970s the solderless breadboard (AKA plugboard, a terminal array board) became available and nowadays the term "breadboard" is commonly used to refer to these. "Breadboard" is also a synonym for "prototype".

In fact most PCB industry guys don't know the reason why old PCB guys use way.
They even don't know the breadboard.

Because the solderless breadboard does not require soldering, it is reusable.
This is a very simple kind PCB type.

This makes it easy to use for creating temporary prototypes and experimenting with circuit design. 
And the delivery also can control by yourself.
In fact most of them, the breadboard prototype PCB's delivery very very fast.

And the cost of breadboard also beyond you expect.
They are very cheap.
For this reason, solderless breadboards are also extremely popular with students and in technological education. 

But not all breadboard looks like today's.
You know everything did it's changes.
Older breadboard types did not have this property. 

The wise way of older breaboard not very ideal.
Even we can say it just use one time.
Because if you want to reuse the breadboard.
The cost may higher than choose a new one.
A stripboard (veroboard) and similar prototyping printed circuit boards, which are used to build semi-permanent soldered prototypes or one-offs, cannot easily be reused.

A variety of electronic systems may be prototyped by using breadboards, from small analog and digital circuits to complete central processing units (CPUs).
But to be honest, CPUs use breadboard just for temporary time.