First was in 1977. I could have sworn the brand was Spectravideo, but looking it up just now says that was a USA co. founded in 1981. Mine was a Canadian co, whatever the name was. Got it for £25 in my town's first computer store.
It was mainly a keyboard plus cassette deck. Type basic programs in from magazines, save them on cassette, and then hook into the TV for visual playback. The first computer game I played on it was a Four-in-a-Row, had a lot of fun changing the code to see the effect on the game! Later I would lust after the 16K RAM in the ZX Spectrum--never got one though.
Apple started their Euro HQ about 60 miles from me, so I got to play with friends' Apple IIs occasionally. In 1985 I joined another big computer co which had their Euro HQ in my home town, so from then on I was using PCs daily in my work. I don't recall the first brand(s), had no HD, 5 1/4" FDD [disks held 128K iirc], and monochrome monitor.
That company eventually started making PCs, so I bought my first home machine in 1990, a 386 stuffed to the gills with ahem 'extras from around the factory' :D The original Prince of Persia was the first game to make me go "Wow" at the animation, followed by Wolfenstein3D and it's amazing 3D environment. Been hooked since, with Command & Conquer and Half Life 2 being the intervening "Wows".
Never got a console, but the family have a Wii which has got a bunch of non-gamers rockin' and rollin'. Not sayin' that's a good thing, mind you, not if you're close by :) I've been building my own PCs since late 90s.