1.1system architecture

1.1system architecture

1. Embedded systems

   • computer within another device
     • example
       • dish washer
       • microwave
       • washing machine
   • A computer systemmade up of both hardware and software
   • (often known as firmware)
   • doesnt usa=e an operating system

2. cache

   • what affects the performance?
     • clock speed-doubling the clock speed will doubloe the number of the instruction executeper second
     • cache size-increasing the cache size will reduce the number of memory to disk transferand thus may speed up processing and software
   • definition-usually very fast and also has a small amount of memory on the processor

3. MHz

   • measured in hertz (Hz)
   • IGHz processor executes 1 billion instructions per second