WHICH RASPBERRY PI SHOULD YOU BUY? PI 5, PI 4, PI 3, ZERO, PICO AND COMPUTE MODULE EXPLAINED

Walk into any engineering college lab in India, any small automation workshop, or any startup building a smart device, and you will find a Raspberry Pi somewhere on a bench. The trouble is that "a Raspberry Pi" now means at least six very different boards. Pick the wrong one and you either pay fo