First Generation Microprocessor 

  • The first generation microprocessor were introduced in the year 1971-72. 
  • The Instructions of these microprocessor were processed serialy, they fetched the instruction, decoded and then executed it. 
  • When an instruction of the microprocessor was finished, then the microprocessor updates the instruction pointer and fatched the following instruction, performing this consecutive operation for each instruction in turn.

Second Generation Microprocessor

  • The second generation microprocessor were introduced in the year 1970. 
  • Small amount of transistor where available on the Integrated circuit in the second generation microprocessor. 
  • The second generation of microprocessor is defined by overlapped fatch, and execute the steps. 
  • When the first generation is processed in the execution unit then the second instruction is decoded and the third instruction is fetched. 
  • The difference between the first generation microprocessor and the second generation microprocessor was mainly the use of new semiconductor Technologies to manufacture the chip. 
  • The result of this technology resulted in five fold increase in instruction, speed, execution and higher chip densities.

Third Generation Microprocessor

  • The Third generation microprocessor was introduced in the year 1978. 
  • It is denoted by Intel's 8086 and Zilog Z8000. 
  • These were 16 bit processor with a performance like meaning computer. 
  • These types of microprocessor were different from previous generation of microprocessor in the all main work station. 
  • Industrialist began involving their on IC based microprocessor architecture.

Fourth Generation Microprocessor

  • As many Industries converted from commercial microprocessor to house design, the fourth generation microprocessor are entered with outstanding design with a million transistor. 
  • Leading age microprocessor like Motorola's 88100 and intel's 80960CA is issued and retired more than one instruction per clock cycle.

Fifth Generation Microprocessor

  • It was employed decoupled super scaler processing and their design soon exceeded 10 million transistor in 5th generation. 
  • PC's are a low margin, high volume conquered by a single microprocessor