Microsoft file dating
Microsoft rewrote critical operations from C into assembly.
Windows 3.0 is the first Microsoft Windows version to achieve broad commercial success, selling 2 million copies in the first six months.
The shell of Windows 1.0 is a program known as the MS-DOS Executive. Only modal dialog boxes may appear over other windows.
Components included Calculator, Calendar, Cardfile, Clipboard viewer, Clock, Control Panel, Notepad, Paint, Reversi, Terminal and Write. Microsoft sold as included Windows Development libraries with the C development environment, which included numerous windows samples.
In 2014, the number of Windows devices sold was less than 25% that of Android devices sold.
This comparison however may not be fully relevant, as the two operating systems traditionally target different platforms.
Each family caters to a certain sector of the computing industry.Windows/386 uses the virtual 8086 mode of the Intel 80386 to multitask several DOS programs and the paged memory model to emulate expanded memory using available extended memory.Windows/286, in spite of its name, runs on both Intel 8086 and Intel 80286 processors.The early versions of Windows are often thought of as graphical shells, mostly because they ran on top of MS-DOS and use it for file system services.However, even the earliest Windows versions already assumed many typical operating system functions; notably, having their own executable file format and providing their own device drivers (timer, graphics, printer, mouse, keyboard and sound).