We got an Amstrad CPC 6128 in 1986. My brother is busy trying to get it running again. Jet Set Willy is still my favourite game of all time. 
The first computer I ever used was one that we had at my high school in the 70’s. I think it was made by Hewlett Packard. It was a big old thing that took up an entire tabletop, had a keyboard and casette memory and a one-line red LED display, and it spit thermal paper out the top. It also had a card reader and plotter connected to it.
The first computer we had at home was the Osborne 1 my dad bought back in the late 70’s. That was where I first learned to program in Basic. I still have it, it’s in a closet in my basement. My mom almost threw it out after my dad died, and I said “Nooooooooooo! I’ll take it!” I still get it out and play with it sometimes.
The first computer I ever owned myself was a Kaypro, back around 1987-ish.
commodore 64 
Atari 1040ST. It had a whole megabyte of RAM (ooooooooo!) I loved that computer so much as a kid. In fact, I have an ST emulator and still occasionally play the games to this day.
A Franklin Ace 1200. This was one of the models Apple sued Franklin over for stealing Apple’s ROM code. It was a perfect clone of 128k Apple ][e system. Two floppy drives, 128k memory. It even came with an 80 column card.
I got mine from a coworker who used to work at Franklin.
After that system, I had a Laser 1000, which was a clone of an Apple //c.
CompuAdd 286 with a amber Hercules monitor, 20M hard drive (which I knew I would never fill up) and a 1.2M floppy. I spent many an hour backing up my entire hard drive to floppy disk. My friends were jealous because I could read their 360K floppies and they couldn’t read mine. I eventually added a 1.44meg floppy when I decided that they weren’t just the “latest fad.”
Sinclair ZX80 with 1k RAM. Woohoo! I bought the 15k RAM add-on for $99.
The very first computer I ever programmed was a CDC 6600. At that time, it was the world’s big mama supercomputer and it still somewhat amazes me that my current desktop system beats the hell out of the 6600.
The first one I ever bought was the good old Commodore 64. I even used to run a bulletin board for Commodores back in the day.
Commodore 8032, from around 1980.
The 80 was for how many characters would fit across the monitor screen, and the 32 was for 32K of RAM. Wheee! Used it for writing a textbook. Could get 7 pages of text on a floppy before having to swap out for a new one. No hard drive, obviously. One floppy drive to hold the OS and the wordprocessing app, and one drive to save the output. Piles and piles of floppies by the end of the project.
Ahhhh…I lost my mainframe virginity to a Cyber Computer. She was a study, simple, but very functional and strong workhorse. Sometimes, though, I had to work with her sister, a VAX. Gawd, what a high maintanence, sorry I have a headache right now, airheaded bitch she was. Then that sexy, seductive CRAY moved in. Talk about smart, fast, and classy! A computer you could sit on in airconditioned comfort, now THATS a mainframe (thought I never did get to sit on her). But boy o boy, could she manipulate my bits like nobody’s business. I bid a tearful fairwell to the old Cyber lass, using her until the the day she left (with a tear in my eye) and gave that useless VAX whore her walking papers.
I still have my CRAY handy dandy quickstart mini notebook squirrel away were my SO can’t find it. If old Cyber gal showed up at my doorstep, I could probably start typing “commands” to her from memory and she would know exactly what to do and do it well. I hear that sluttly old VAX found street work with some big software outfit out in the pacific northwest.
Commodore 64 or a 286. I really don’t remember which came first, I was too young. The Commodore was only used as a game system, so the 286 is probably the best answer.
As soon as I can be bothered, I have this fully working beauty to collect.
Kit-built Sinclair TS1000 b/c I was in medical school and too dirt poor to buy the pre-assembled one.
After I soldered it together, two capacitors were left over and it wouldn’t work. Nice.
I guessed where they went, put 'em in and voila! It worked (it used the TV for a monitor, as mentioned).
It was completely useless piece of crap. Coolest thing I ever owned. For some reason I only remember it as having 1 or 2 K of memory, but I could be wrong. I know I couldn’t afford the 16K module…
Eventually to a Mac 128k a few years later, as I recall, with perhaps some sort of Commodore or interim somethings or other.
Man, the hours I spent on one of them playing Burnin’ Rubber. I adored the crash animation.
Without reading any replies to refresh my memory…I believe it was an IBM 286, BUT I recall the 286 being a new, powerful thing in comparison to…whatever the hell I was actually using.
I don’t recall much because, at that point, I was dating geeks, and hadn’t yet quite become one. About the only thing I used the computer for was BBS games and word processing.
OH!!! and Trade Wars…love me some Trade Wars <3
My first computer was a Tandy Color Computer II. I was really clueless when I bought it, but it got me far enough that I went back to college to get my degree in CompSci.
Computer #1 - 1981 - Dad bought us one of the original IBM PC/1’s, with dual 5.25" floppies, a smokin’ fast 1200 baud modem, a hilarious enormous relic of a printer (a daisy-wheel!) no mouse, monochrome monitor, no hard drive, 1/2 megahertz & 64k ram.
Computer #2 came along a few years later and was actually a downgrade if possible - my grandfather upgraded to a 286 (oh, the jealousy!) and passed this beauty along to us - a TRS-80, that had the charming habit of rebooting itself every few hours. No pretty peripherals, either. No cassette drive, just floppies.
Used BBC/Acorn.
Owned, Commodore 64, with that height of technical sophistication the cassette drive, in which th role of floppy disc was taken by the humble audio tape.