The features of the operating system included a total lack of a command line interface (which was included in Microsoft's Windows 1.0 introduced in 1985), Finder, and the menu bar.
System 1, the initial operating system version for the Apple Macintosh
operating system | Super Nintendo Entertainment System | Nintendo Entertainment System | Android (operating system) | Global Positioning System | Solar System | X Window System | Korean Broadcasting System | System of a Down | Domain Name System | Seoul Broadcasting System | North Carolina Community College System | Mutual Broadcasting System | Bulletin board system | system | Turner Broadcasting System | Program and System Information Protocol | Geographic information system | Ubuntu (operating system) | Tokyo Broadcasting System | Federal Reserve System | Youth system | Embedded system | solar system | Seigneurial system of New France | Interstate Highway System | Fedora (operating system) | Trans-Alaska Pipeline System | Network File System (protocol) | English football league system |
Early System 1 boards and cartridge boards used large numbers of 7400 series TTL chips.
In the late 1980s and early 1990s, Kingsoft researched and developed word processors and other office applications, such as its flagship product, Word Processing System 1.0, which launched in 1989, six years before the first version of Microsoft Office launched.