If you’re a person of a certain age (oh boy), you might remember that basic calculators used to run on handy little solar ...

Preview 0:58 A bit different, and my qualifications 1:40 What's in the box? 3:00 So why even consider a trackball? 4:49 Build quality and design 5:33 Strong rubber feet 5:50 Wheels and buttons 6:29 ...