Question: what is the difference between raspberry pi 3 and zero?
Answer: The Pi3B is a far more capable machine that the Pi Zero W. The Pi Zero W has:a 1 core ARMv6 processor running at 1GHz with 512MB of RAM. The Pi3B has a quad-core Cortex-A53 ARMv8-A processor running at 1.2GHz with 1GB of RAM. The Pi Zero W has a single micro USB port and a mini-HDMI connector.