Operating system it. Operating systems are found on many devices that contain a computer from cellular phones and video game consoles to web servers and supercomputers. The dominant desktop operating system is Microsoft Windows with a market share of around 82.74%. macOS by Apple Inc. is in second place (13.23%), and the varieties of Linux are collectively in third place (1.57%). In the mobile (smartphone and tablet combined) sector, use in 2017 is up to 70% of Google's Android and according to third quarter 2016 data, Android on smartphones is dominant with 87.5 percent and a growth rate 10.3 percent per year,
RCA Spectra 70 the Spectra 70 CPU were announced around 1965, ranging from a small system (70/15) to the large scale (70/55). Some of the main features were: These systems all ran RCA's real-memory operating systems, DOS and TDOS. The systems that supported virtual memory, the Spectra 70/46 and 70/61 and the later RCA 3 and 7, could also run the RCA's Virtual Memory Operating System (VMOS). VMOS was originally named TSOS (Time Sharing Operating System), but was renamed to expand the market for the system beyond time-sharing. TSOS was the first mainframe, demand paging, virtual memory operating system on the market. The