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Generally
the family concept of processors is implemented depending on basic speed, size and
degree of simultaneity. This concept separates the architecture of a machine from
its implementation.
A set of computers is offered having different price and performance
characteristics presenting the same architecture to the user. The performance and
price variations are due to different implementation of the same architecture.
Even
though many different models of processors are released for different levels of
application, some of the basic concepts apply consistently the whole time.
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Many
models of processors have been released with increasing performance, but the memory
access time was not simultaneously increased along with processor’s speed which
became a problem. So methods like wider data paths from memory to processor and
caches were introduced.
The highly
efficient processors today can be used for applications like videoconferencing,
simulation modeling, image processing, speech recognition etc.
As high
level languages are used, the execution behavior can be easily observed. So, more
efficient processors called RISC processors were developed with simple instruction
sets and efficient pipelining.
MIPS
technology Inc. released the first commercial RISC chip.
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