What is the role of flat cables?

In our lives, there are many places will use the cable, but its scope of application, but very wide Oh! We talk about what is the role of cable. The cable is powered by the system module to ensure the normal operation of the module. Cable  for the moving parts and activities within the area of data  transmission, such as the computer internal motherboard to connect the  hard drive, optical drive data cable, mobile phone motherboard  connection display and other equipment. If there is no cable, a lot of things can not be used normally, but also attracted a lot of trouble.