Timed devices are tools or machines designed to perform actions after a specific period or at a scheduled time. Common examples include clocks, timers, and alarm clocks. These devices help people manage their time effectively, whether for cooking, exercising, or waking up. Many timed devices use mechanical or electronic components to keep track of time. Some can be set to repeat actions, like turning on lights or appliances at certain times. Others, like stopwatches, measure elapsed time for activities such as sports or cooking, providing users with precise control over their tasks.