One of the earliest adopters of rugged handheld computers was the US military, and today the military remains one of the largest users of these devices. Military personnel all over the world use wireless handheld computers to take inventory of supplies and equipment, record inspection and maintenance data, manage shipments, and support other military operations. Many of these activities take place in remote locations requiring specialized, ruggedized mobile computing devices.

Commercial circular connectors can be used in many types of electrical control and distribution systems. Applications include, but are not limited to, connectors for signal, sensor, power, and PCB interfaces, as well as controllers, encoders, and connector interfaces for robotics, feeder/delivery, and assembly systems.