What is a machining center and how do CNC machines work?

[saad ahmed khan]

can anyone tell me what exactly a machining center is?
from googling it i find lots of sites that are selling cnc machines..

can anyone give me a link that has detailed info about cncs their uses and purposes working etc..?

any help will be appreciated
thanks in advance

 

[mohsinkhalid]

The term “machining center” describes almost any CNC milling and drilling machine that includes an automatic toolchanger and a table that clamps the workpiece in place.