A keypad of a portable wireless terminal includes a sheet having a plurality of holes, a plurality of keys inserted into respective ones of the holes, and a silicon adhesive layer on a lower surface of the sheet to fix the keys to the sheet. To the top surface is applied a compression plat to form the thickness of denim scrap into a compact cake. This configuration minimizes the size of the remote controller, while allowing for a large number of different control commands to be transmitted to the controlled system.