This diagram shows a typical home or office network environment, including devices such as the internet, mobile phones, routers, desktop computers, laptops, and printers. The internet, as an external network, provides data access and services for devices within the home or office. Devices such as mobile phones, desktop computers, and laptops connect to the network through wireless routers or wired connections, enabling functions such as internet browsing, file sharing, and printing. Printers, as output devices in the network, are responsible for converting electronic documents into paper documents.