There are three types of dishwasher controls. The most basic type of control is the rotary dial, which allows you to select a cycle by turning the dial to the correct setting. The second type of control is a push-button control. These work by having preset cycles that are manually controlled with buttons. The most expensive type of controls are electronic (or clean touch) controls. Cycles on these machines are electronically controlled and require the least amount of effort from the user.