Macintosh is a range of computers designed and manufactured by Apple Inc. in Cupertino, California, better known as Mac. Mac used original Motorola 68K microprocessors, which were later replaced by IBM PowerPC processors.
After using them for more than ten years, Apple made a decisive switch of processor manufacturer. This time, Apple chose Intel’s Core Duo, Core 2 Duo and Xeon 5100 and the switch resulted in significant changes in the Mac applications. Among other things, previous software would have to be reprogrammed to run on Intel processors.
Another important step that was realised through the switch to Intel was the ability to run Microsoft’s Windows operating system on a Mac. This is feasible in several ways, e.g. through a traditional installation of Windows 7 or subsequent versions via Apple’s Boot Camp installer. The second way is through virtualisation programs that run Windows and possibly other operating systems alongside Mac OS X.
The operating system with the graphical interface was originally called the Macintosh operating system, or informally Mac OS. From version 7.6 on, it was officially called Mac OS.