2? Portable DVD player (I'm always envious when I take a summer vacation to see others take a train to watch movies)

3? MP4 with a small screen for playing videos (a friend gave me one)

4? Pager that can receive information (seen as a child)

5. Big Brother comes standard with a mobile phone (this thing has only been seen in movies)

6? Little overlord game machine (that is, playing games, the academic performance is in a mess)

7? Sharp TV with built-in tape player

8? Rechargeable battery that can check the power at any time (seen, never used)

9? Tape music player (the best classmate bought one and often borrowed it to listen to songs)

1? Boys' favorite toy handheld game machine (I exchanged it with my classmates at the weekend with my book "How Steel is Made")

11? Car phone comes standard on old high-end cars (only seen on TV)

12? A CD player that can hold more than one CD at a time

13? Electronic equipment with perspective shell (too high-end, untouched)

14? VCD player (my aunt borrowed it for us to play the 86 version of Journey to the West at that time)

15? IBM brick computer (this is something that big bosses only have)

16? CD high-quality music player (a toy only for trendsetters)

17? Radio (hiding under the covers at night listening to stories when reading)

18? English repeater (English is not repeated, it is all used to listen to songs)

19? Learning machine (I didn't study, but I used it all for entertainment)

How many of these electronic products are your childhood, and which ones have you used?