Embedded Processor分為以下兩大類
Microprocessors (μP)
是用來整合控制周圍系統的晶片，如記憶體。
這項技術從1968年由CADC開始，接者，Gilbert Hyatt, TMS 1000, Intel 4004, Pico/General instrument, For-Phase System AL1
有了巨人的肩膀，亂世群雄的時代就此展開，8-bit, 16-bit, 32-bit, 64-bit, Multicore
其中也將設計結構作為兩種區分,<5>會有所解釋！
RISC(Reduce Instruction Set Computer)
MIPS(Microprocessor Without Interlocked Pipeline Stage)
CISC(Complex Instruction Set Computer)
一個指令可以取代很多RISC的指令。
Microcontrollers (μC, MCU)
已經將許多周邊晶片給整合在一起，為了能夠降低成本和功率的考量下所設計出來的。
Program memory in the form of NOR flash or OTP ROM is also often included on chip, as well as a typically small amount of RAM.
但各有其中之優勢，所以兩者都還存在着。
Reference
<1>http://en.wikipedia.org/wiki/Embedded_system#Processors_in_embedded_systems
<2>http://en.wikipedia.org/wiki/Microprocessor
<3>http://en.wikipedia.org/wiki/MIPS_architecture
<4>http://en.wikipedia.org/wiki/Reduced_instruction_set_computing
<5>http://en.wikipedia.org/wiki/Instruction_set_architecture
<6>http://en.wikipedia.org/wiki/Complex_instruction_set_computing
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