Have you got one of these lurking in the loft?
Apparently they are now collectible and fetch up to £400 on EBay.
My first computer was a 48k Sinclair Spectrum. You had to connect a tape player to the computer to load the programs. Often the process would fail and you had to start again. It had horrible rubber keys and worked in 16 colours. I had the little thermal printer that went with it. That burnt a copy of my programs onto a roll of silver paper. Three weeks later the image had faded away to nothing!
I bought a joystick that connected via an interface you had to program for each game. Eventually I also bought a Sinclair microdrive and a proper keyboard to house the computer in.
Then I had a Sinclair QL, an Amstrad PCW, four Apple computers before moving to Microsoft Windows.
It is hard to imagine the progress that has been made since my Spectrum. My new computer has over 40,000 times more memory than the Spectrum but will still be obsolete in a few years time.