What do you think are the 5 most popular electronic devices made by men on XXI century?

Question

From 5 to 1 (The Best)

Answer 1

All publically available electronic devices were invented and/or made during or before the 20th century.

Answer 2

5. LED's  (to save power)

4. LCD's ( to miniturize)

3. walkman/discman/ipod (personal music players)

2. computers

1. cell phones