2 a A company is developing a new games console. The console games will be stored on a ROM chip once the program to run the new game has been fully tested and developed.

i Give two advantages of putting the game's program on a ROM chip.

ii The manufacturers are also using RAM chips on the internal circuit board. Why have they done this?

iii The games console will have four USB ports. Apart from the need to attach games controllers, give reasons why USB ports are incorporated.

b During development of the games console the plastic parts are being made by a 3D printer. Give two reasons why the manufacturer would use 3D printers.