Some of the things for which we have Apple to thank (Apple did none of them "first", they just did them right, in a way consumers could afford and understand, and mainstreamed them):
The personal computer (Apple //)
The mouse
The graphical user interface (Macintosh)
The 3.5" floppy
The laser printer (LaserWriter)
Desktop publishing
Simple home/office networking (AppleTalk)
Simple, local TCP stack (MacTCP -- this is what enabled internet networking in the early days)
Wireless networking (AirPort -- before this there was NO usable 802.11 consumer networking anywhere)
USB (an Intel technology, but the original iMac was the first computer to mainstream USB by eliminating the floppy and legacy ports, thus forcing its adoption and opening the peripheral market)
FireWire (use for many years, and still used, as a chief high-speed bus for professional video)
The death of the 3.5" floppy
Portable music players (iP0d)
Online music sales (iTunes -- #1 music store of any type)
Online media sales (as much as people hate on Apple and name competitors, it's #1)
Eliminating DRM from online music (this would not have happened without pressure from Apple)
Touchscreen smartphones (iPhone)
Multitouch (seen nowhere in any consumer device outside of online videos before the iPhone)
Smartphones that can use data for anything and any app on any carrier (without the iPhone, there would be NO Android as we know it today)
Tablets (tablets languished and floundered for many, many years before Apple realized that you can't shoehorn a desktop OS onto a tablet)
The list goes on, and on, and on.
No, Apple was not first and did not "invent" any of these. But Apple, and Steve Jobs in particular, had a unique insight into these technologies. Anyone in computer science or the general IT realm who doesn't have a vitriolic hatred for Apple openly acknowledges this. Apple isn't the only innovator, but it has been a massive one, largely thanks to Steve's vision.
Thanks, Steve, for all you've done.