ViewSonic is a company which manufactures computer display devices including monitors, flatpanel LCD's, and video projectors. They are quite popular in the USA, and they are one of the first companies to sell flatpanel LCD's in retail stores. You can usually quickly recognize a ViewSonic monitor by looking for the Gouldian finches logo somewhere on the front of the monitor. They have acquired the brand names for display devices including Optiquest, Cybervision, and Nokia.