1990? We were solid lower-middle class, and I got a computer for Christmas in 1983. I bought my own, from $$ saved by working in 1987.
Computers were roughly ~ $1000 in 1990. How did your lower-middle class family justify a $1000 expenditure inflation adjusted to $2565 today? Average minimum wage in the US is $11.30 so that's 29 days working at minimum wage.
My family was on the border of upper-lower and lower-middle and we bought a computer once and used it for 10+ years. I dumpster dove later to scavenge parts for upgrading until the mid 2000s when cheap computers became available.
We were solid middle-middle class and didn't have a computer until 1989, and it was a "free", 2- or 3-year-old computer from my dad's work that they were going to throw away. We absolutely could not have afforded a computer during the 80s.
Even in the 90s, we kept relying on cast-offs from my dad's employer, and when I was preparing to go to college in '99, my parents scrounged to buy me the parts for a computer to build and take to college. But even then, my dad bought the parts at a discount through a former co-worker's consulting company, and vetoed a couple of my more expensive component choices.
And now that I think about it, my first laptop in 2003 was my dad's old work laptop that had been decommissioned.