Final answer:
Sydney's keyboard and mouse are examples of input devices, essential for users to interact with and provide necessary data to their computers.
Step-by-step explanation:
Sydney's new keyboard and mouse, which she bought to improve her gaming experience, are both examples of input devices. These devices are essential for users to interact with their computers, providing the necessary data and commands for the computer to process and execute. Input devices come in various forms, ranging from traditional keyboards and mice to more advanced options like graphic tablets and voice recognition systems. Each serves the purpose of allowing users to provide input to their computers in a manner best suited for their activities, such as gaming, in Sydney's case.