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A modem (short for Modulator-Demodulator) is a hardware device that enables data transmission between digital and analog networks. The modem converts digital signals generated by the computer into analog signals that can be transmitted over telephone lines or other forms of analog communication. Upon receipt, the modem converts the analog signals back into digital signals, allowing communication between devices and networks. Modems are essential for connecting to the internet and can be integrated into routers or be standalone devices.

In everyday life, modems are used in many situations to provide internet access. For example, a DSL modem connects a home to the internet via the telephone line, allowing users to browse the web, send emails, and use streaming services. In a work environment, modems are often used to connect business internet networks to the web, facilitating communication and collaboration through online tools. Additionally, mobile modems, which connect to cellular networks, offer internet connectivity on the go for devices like laptops and tablets. 

In Switzerland, modems are usually provided on loan when subscribing to a home internet plan. Operators like Swisscom, Sunrise, and Salt offer various types of modem-routers to meet consumer needs, including DSL, cable, and fiber optic modems. Switzerland has invested significantly in network infrastructure, ensuring that citizens can access reliable and fast internet services. Modems are a key component of this infrastructure, supporting the growth of digital connectivity and the adoption of smart technologies across the country.

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