nation of Japanese personal computers: NEC responded quickly to the new demand for business personal computers. NEC succeeded in attracting many third-party suppliers and dominated software production and distribution. NEC adopted Microsoft's MS-DOS as an operating system for the PC-98. Western computers lacked Japanese support due to its display resolution and memory, so they could not get into the Japanese PC market until the DOS/V and faster computers came out; for example, IBM Japan sold the IBM 5550 instead of the IBM PC. Yoshihiko Hyodo, a programmer who developed the text editor VZ Editor, said two advantages that the PC-98 had were its kanji character memory and non-interlaced monitor. Both provided users with a more comfortable Japanese environment. A senior vice president of Otsuka Shokai (a computer distributor for enterprises) recalled that "early users such as Kao already had office automation with the PC-8000, but it lacked speed and kanji support. Then, the PC-9800 was released, and it was perfect, so distributors and users immediately switched to it." Shunzo Hamada of NEC thought the biggest reason for the success of PC-98 was that NEC could get software companies to cooperate. He said, "Third-party suppliers of Japanese PCs had already grown up to a certain extent. However, it was not because they were organized. They were born by themselves, and hardware manufacturers didn't touch them. When we developed the PC-9800 series, we changed our method to make a conscious effort to grow them up". PC-98's large software library assured buyers that the machine could be used for all purposes, although most users actually purchased only a few major softwares. Ichiran Kou, a computer consultant, pointed out that IBM influenced NEC's strategy. Since 1982, NEC had four personal computer lines, and they covered a wide price range, similar to IBM's mainframe business. However, NEC's computers had poor backward compatibility and as such was criticized by users and software developers. After reforming personal computer lines in 1983, NEC began expanding the PC-9801 series and its number of models exceeded its competitors. NEC encouraged third-party developers as IBM did for the IBM PC. The basic hardware of PC-98 was also similar to the IBM PC, though it was not IBM compatible. Kou guessed that NEC avoided releasing an IBM compatible PC because the company was proud of developing an original mainframe. Yasuhiro Uchida, a literature professor, wrote an essay titled "Users chose the most