Internet?? Wrong! We most certainly did have that in the 1980s! It was all command line navigation in those days, but it was most definately the start of the "internet" age. I used to file flight plans when I was a student pilot in ~1986 online using Compuserv with my Atari ST! We also had prodigy which was soon followed by AOL plus thousands of private BBS systems, and soon the emergence of the "ISPs" in ~early 1989.
I know. But compared to 2006 it was like jurassic era.
16 bit sound?? Wrong again. There are several, but one that comes to mind is the Atari TT030 (circa 1988).
Now, what could you do with it? Not play MP3s at least and folk computers (Amiga 500 and Atar ST) had only 8bit. Sound cards for PC were still expensive.
Harddisks?? Been around since at least the mid 1980s if not earlier. PCs had 'em. Even old Macs - the ones that look like training toilets - had 'em.
Expensive, slow and small but not physically small.
DVD/CDRom?? Correct about DVD. But CDRoms have been around since, like, 1982? I remember buying Van Halen "1984" on CD instead of Vinyl!
Audio CD != CDROM! But there was cdrom drive (with games on cd) even for C64. And CDTV. But nothing like today. Today we can buy cheap DVD+CD combos for few bucks and you can write your own CDs. Or Audio CDs. Few bucks more and you can burn your own home videos.