PI

Raspberry PIs - a lot of Linux for a good(ish) price.

This refers to Raspberry Pi, which is a series of small, affordable computers made by the Raspberry Pi Foundation. They are very popular for learning programming, building projects, and running lightweight computing tasks.

• a lot of Linux:
  Raspberry Pis are designed to run Linux-based operating systems. While they can technically run other OSes, almost everyone uses some version of Linux (like Raspberry Pi OS, previously called Raspbian). You get access to a full Linux experience (terminal, networking, programming, etc.) even on a small board.

• for a good(ish) price:
  Raspberry Pis are relatively cheap compared to traditional desktop or laptop computers. For under $100 USD, you can get a functional mini-computer. However, the term “good(ish)” acknowledges that while the price is generally low, recent supply shortages and increased demand have pushed some model prices up, so the value-for-money can vary.

What do you need to make it easy to work with them:

• A wired keyboard and mouse will save a lot of time mucking around with setup
• A micro HDMI to HDMI cable will save a lot of headaches with the screen disappearing on you (Amazon link)
• You need a Micro SD card to load software on to them and a card reader. These are available in large sizes if you want. Half a terabyte for $117 when I last checked (Amazon link)

Bottom line:

Raspberry Pis are an affordable way to experiment with and run Linux, making them popular for learners, hobbyists, and even professionals.