Before the Swarm - The Good Old Days
In the "Good Old Days", computers where physical things... real tin... and you had either the Personal Computer or the Mainframe.
PCs were "small": they had 1 CPU (well, modern ones have more), limited RAM (16GB is a lot), and realtively small storage-systems (a couple of TB if you're lucky.) PCs were designed to be used by 1 person at a time. PCs sat on your desk. PCs became portable, then ultra-portable, and even evolved into hand-helds (take another look at the specs for your smart-phone!)