I've used Macs on and off for the better part of a quarter century, in various guises and at work and/or at home. The Macintosh Plus I lugged around in the Eighties when I worked for the Sunday Express seems like a behemoth today, and while it was a burden on the shoulder (we each had a carrying case about as large a piece of luggage to sling over us as we went home to do yet more work) it was also a marvel: I could work anywhere electricity flowed!
I downloaded a free app today from the iTunes Store. Mactracker lists the specs of all that Apple hardware through the years. I guess the hardcore Apple types will know it all anyway, but it's a cheap thrill for a longtime user such as myself.