CLASSIFICATION OF EMBEDDED SYSTEMS Some of the criteria used in the classification of embedded systems are as follows: (1) Based on generation (2) Complexity and performance requirements (3) Based on deterministic behavior (4) Based on triggering Classification Based on Generation First Generation : The early embedded systems were built around 8bit microprocessors like 8085 and Z80, and 4bit microcontrollers. Simple in hardware circuits with firmware developed in Assembly code. Digital telephone keypads, stepper motor control units etc. are examples of this. Second Generation : These are embedded systems built around 16bit microprocessors and 8 or 16 bit microcontrollers, following the first generation embedded systems. The instruction set for the second generation processors/controllers were much more complex and powerful than the first generation processors/controllers. Some of the second generation embedded systems contained embedded operating...