RISC based CPUs have an entirely different set of instructions (Opcodes, Registers, Commands, etc) than a CPU based on the Intel x86 architecture. Power PC used something called a RISC (reduced instruction set computing). So, before Apple decided to switch over to Intel processors - all Apple hardware used a processor architecture called Power PC.
#MAC OPERATING SYSTEM FOR PC MAC OS#
Interestingly, the Latest versions of Mac OS are based on a unix core system after Apple bought the company that Steve jobs worked at after he left apple which was at the time developing a Unix based operating system. It was originally designed to run only on Apple Macintosh hardware systems. It is credited with popularizing the graphical user interface concept. MacOS - Originally delevoped in 1984 with the original Macintosh.
#MAC OPERATING SYSTEM FOR PC CODE#
It is based on the open source philosophy where the source code for it is visible and modifiable by anyone who knows what they are doing (as opposed to Windows and MacOS* in a sense, where the code is proprietary and not available for the public domain). Linux - Developed originally by Linus Torvalds, it is based on the UNIX system and is very similar in many ways, however now there are many different variants (free and commercial). It was designed as a multi-user, multitasking operating system. The original Unix was developed at AT&T's Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. Unix - There are many variants of this operating system. Windows - Owned and developed by Microsoft, i think we are all familiar with this so no explanation needed. It is not proprietary in the sense that you can mix and match parts from different manufacturers allowing the average person to purchase parts that they require and build their own system from scratch (compared to a Mac, where they are designed to be purchased as a single unit pre-assembled, ready to go). Then you have what you are referring to as a PC which is more often known as IBM Compatible PC's. Mac (Apple Macintosh) is a proprietary system built by Apple computers, which primarily uses it's own operating system Mac-OS (some enthusiasts do manage to get other OS's running).
:max_bytes(150000):strip_icc()/A24-InstallMacOSonPC-annotated-4d3d7613400742e49403adc408b64c6e.jpg "mac operating system for pc")
This term was coined to differentiate between other systems at the time which where predominantly dumb terminals that connected to a mainframe on which many people would use at the same time. It is a general-purpose computer, whose size, capabilities and original sale price makes it useful for individuals, and which is intended to be operated directly by an end-user with no intervening computer operator. PC is an abbreviation for Personal Computer.
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