Xerox, I believe it was an 8086 or an 8088. It didn't have a hard drive, you had to put a 5.25 floppy disk into the a:\ drive before you turned the computer on, I don't know if the OS (DOS) resided on the floppy or on the bios chip, but if you didn't have a formatted disk in the drive, you would get some kind of boot error.
It blew my mind when I saw my grandparents' computer and they turned it on without putting a disk in it first.
Our word processing program was called "Celebrity". you booted the PC with the program disk in a:\, and you could also save your files to the same disk, but best practice was to put another disk into the b:\ drive and save them there. We each had a box with a handful of floppy disks in it. We also had a few PC games like Striker, Paratrooper, Centipede, Wheel of Fortune, some kind of weird forest fire fighting game, and one called bouncing babies where babies fell out of burning building and you had to catch them and juggle them all the way to the back of an ambulance. Jesus Christ what a weird ass game that was. There was also a precursor to minesweeper called either land mine or mine detector or something. You didn't have to detect all the mines, just make it from one side of the board to the other.
We weren't allowed to have Nintendo so those games got played A LOT.