The next few years saw the appearance of a laptop PC from Compaq Computers and the first notebook-style laptop from NEC called NEC UltraLite. The year 1989 was quite successful for laptop producers. First, there was Apple Computer that developed the Macintosh Portable, the evolution of which turned it into the PowerBook. Then a company named Zenith Data Systems introduced its Zenith MinisPort – a portable computer weighing 6 pounds (2.5 kg). Finally, there was Compaq Computers, who released the Compaq LTE.