Computer systems

Computer systems

1. A Computer system is an electronic programmable data processing machine

2. A system is a collection of parts that work together for a defined purpose

3. A computer system is a collection of hardware and software that works together to achieve a set task

4. For a system to be useful it must roduce something - an output it needs to recive and process inputs in order to produce outputs

5. Input -> processing+storage ->output

   • You need these in a machine to be a computer system

6. Dedicated systems

   • A dedicated system is something which is designed for one purpose
   • An example of one is a microwave oven

7. Embedded systems

   • an embedded system is a computer system with a dedicated function within a larger mechanical or electrical system
   • An example of one is a computer to control a robot in a factory

8. Reliability

   • Breakdown
     • Backups can be on or off site data safe disk mirroring system running alongside the other one so you can switch hardware sourcing plans
   • mean time between failures (MTBF)
     • This is the mean time between a failure and it been fixed