You can achive a lot more with digital devices by using them together. You need to be able to describe how digital devices are compatible with each other.
Communications technologies working together
The mobile phone and laptop are compatible because they both have USB ports, and can communicate via WI-FI or bluetooth technology. So you could use the camera on the mobile phone to take a photograph, transfer it to a memory stick and then send via ethernet cable.
Many digital devices are converging: Performing functions that were originally performed by different devices. If your mobile phone has a camera and an internet connection, you could take and upload photos to a website using just that one device. A device that can perform several functions is called a multifunctional device.