Microprocessor

What is a Microprocessor?

 As name implies microprocessor is a micro electronic device that fetches instructions from the memory location where these instructions are stored and execute the and perform a specific task according to the instruction.Instructions are generally located in the memory in the  form of hexadecimal words.

Micro processor can also be define as the electronic chip which has computing (Analysis of data ) decision making capability.

There are various type of  Microprocessor available in the market depending on the Data word length size and technology. Some of the microprocessors chip available in the market are listed below:

  Micro-Processor Chip                    Bit length                            Technology

• 4004                                      4 Bit                                      PMOS  
• 8008                                      8 Bit                                      NMOS
• 8080                                      8 Bit                                      NMOS
• 8085                                      8 Bit                                      NMOS
• 8086                                     16 Bit                                     HMOS
• 8088                                     8/16 Bit                                 HMOS                 Here H means High Density Channel. 8088 is developed by IBM. It is externally 8 bit and internally 16 Bit
• 80186                                    16 Bit
• 80286                                    16 Bit    
• 80386                                    32 Bit
• 80486                                    32 Bit
• 80586 =Pentium                     64 Bit                                                   The other improves in Pentium Processor are Pentium Pro, Pentium II, Pentium III, Pentium IV.