COMPUTER PROGRAMMING FUNDAMENTALS
RASPBERRY PI PROJECT IDEAS
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Detailed explanation-1: -Both the Raspberry Pi boards provide a 40-pin extended GPIO header. However, when it comes to USB connectivity, Raspberry Pi 4 provides two USB 3.0 ports along with two more USB 2 ports. And, the Raspberry Pi 3 limits to two USB 2 ports. So, if you require faster data transfer speeds, USB 3.0 ports should be of help.
Detailed explanation-2: -Raspberry Pi 4 Tech Specs 2 USB 3.0 ports; 2 USB 2.0 ports.
Detailed explanation-3: -Use the Device Manager to determine if your computer has USB 1.1, 2.0, or 3.0 ports: Open the Device Manager. In the “Device Manager” window, click the + (plus sign) next to Universal Serial Bus controllers. You will see a list of the USB ports installed on your computer.
Detailed explanation-4: -This little beauty is just what a lot of Raspberry Pi Zero owners have been wishing for–three USB ports and a wired network connection, with a microUSB connection to the Pi Zero.