Handheld counters are simple devices used to keep track of numbers or counts. They often feature a button that, when pressed, increments a display by one. These counters are commonly used in various settings, such as during events to count attendees, in sports to track scores, or in inventory management to tally items. These devices can be mechanical or digital, with mechanical versions using gears and levers, while digital ones display numbers on an electronic screen. Handheld counters are portable and easy to use, making them a practical tool for anyone needing to maintain an accurate count, whether in business, sports, or research.