To type on your computer you need a

(a)  

You need a ... to control de cursor without keying

(a)  

To control your video games you need a ...

(a)  

You need a ... to make or receive a call

(a)  

To answer someone calling you while driving you need a

(a)  

To determine your vehicle's current position and location and be guided in your way ahead you need a

(a)  

If you want to store digital information you need a

(a)