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Intel 286 processor introduces three new features


  • Multi tasking ability
  • Virtual Memory support
  • Two operating modes

Multi Tasking Ability

Multi tasking is the ability of a processor to perform more than one task at any given time. A task is the instruction being executed . In multi tasking the processor is actually executing only one instruction at any given time but it switches so quickly from one task to another that it appears as several tasks are being performed simultaneously.

Virtual Memory Support

An important feature introduced in intel 286 is the support for the virtual memory. The term "virtual" means "imaginary" or "which do not exist actually". Therefore the term "virtual memory" means "imaginary memory" or "the memory that do not exist actually".It is a technique of using free space on a hard disk to store data or instructions that are not required immediately.

Two Operating modes

An operating mode of processor is the way a processor accross the system memory Intel 286 supports two Operating Modes
  • Real mode : In real mode processor does not support multitasking & can access only the actual physical RAM of the computer
  • Protected mode : In this mode, the processor supports multi tasking & has access to both the actual physical RAM & the Virtual memory.

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