The first computer I ever touched/used was called Colecovision. I remember it had Donkey Kong, Mouse Trap, Venture, Frogger, etc. I must have been ~ 6 years old.
...oh, you mean COMPUTER....as in IBM PC type? Hmmm...
Well, in that case, it all started with Commodore 64. From there, it was a 486-33 with 8MB, which was later upgraded to 16MB with a new ADLIB sound card and a 4x CD-ROM. Ran DOS and Window 3.1. We used to use Word to type up school reports and an old ribbon dot-matrix printer to print it all out. Paper had the tear-off holes on the sides and everything.
After that, parents bought a Packard Bell when I was in high school. It had a 100 MHz Pentium processor and 16MB of RAM and it had Windows 95. Wow, that takes me back. On-board 1MB graphics chip and a single ISA card that had the sound, 14.4 modem, etc. all built in. DOOM just flew on that machine, let me tell you. We bought an external ZIP drive for that one and had a flat-bed scanner. Pretty cool.
Then I got into college and talked them into getting me my own computer. It's the one I rebuilt last year, a 350 MHz Pentium II, 128MB PC-100 SDRAM, 10GB hard drive, 8MB Intel i740 based AGP graphics, and AWE64 Gold sound card. Had a 56K modem too. I remember those days, because it was a serious gaming type machine with Half-Life, Final Fantasy VII, Diablo 1 and 2, and some basic ROMs for NES and SNES. I remember Napster and Netscape Navigator, all running on Windows 98 First Edition. I still have that CD-ROM and the license key.
My next PC was the only switch to AMD I ever did with an Athlon XP 1800+ processor, 256MB of RAM, and a 64MB ATI Radeon 7500 AGP card. I put Windows XP on this one and it worked just fine up to my time in the U.S. Army in 2005.
I bought during my school training at Ft. Gordon a brand-new Dell Inspiron XPS Gen 2 laptop. I still have it today and it works. It has a 1920x1200 16:10 17" LCD display, a 2.1 GHz Pentium M, 2GB of DDR2-533 RAM, a 250GB HDD partitioned into a ~40GB and a ~200GB drives to keep Windows XP booting from the first 40GBs of the drive, otherwise it could fail to boot. I had to reinstall XP 5 times over the course of 2 years before I figured that out. It started with an nVidia GeForce Go 6800 Ultra 256MB PCI-Express card, but I upgraded later to a GeForce Go 7800 GTX 256MB card. I still have it and it still works.
My next system was my first desktop build in over 10 years. In 2010, I got an MSI Big Bang Trinergy, Intel Core i7-860 2.8GHz processor, 16GB DDR3-1600, 1TB HDD, nVidia GeForce GTX 480 x2 in SLI, Blu-Ray burner, full-tower Antec 1200 case and I put Windows 7 on it. I even bought a 2x120mm radiator and a water block for a GTX 480, but never went through with putting in a water cooling loop. I later included a 500GB hard drive to run Mac OS X Snow Leopard, but never could get the sound card to work properly. I also eventually got a 250MB Samsung 850 EVO and put Windows 10 on it and converted the 1TB to a straight data drive. Even limited to SATA2 speeds, it's still wicked fast to boot compared to what I'm used to.
Last year, I rebuilt that Antec PC with a Skylake i7-6700K with a Corsair H100i, a GTX 980Ti, 16GB DDR4-3200 clocked up to full speed, a 256GB m.2 PCI-Express boot drive with Windows 10, a 1TB Samsung 850 EVO for games, and a 3TB Seagate 7,200 RPM drive for data, my old Blu-Ray drive migrated over. The last 30 years has been one weird run.