Case Study #: 1
· Batch Systems - was very expensive. The input side of the user interfaces for batch machines were mainly punched cards and with the limited exception of the system operator's console, human beings did not interact with batch machines in real time at all.
Example: IBM 029 card punch.
· Interactive Systems - the user and the computer interact or communicate with one another also the operating system allows any application to be run at any time. More important applications can be given priority to run before other, less important applications.
Example: Modern Computers (Personal Computers)
Example: Modern Computers (Personal Computers)
· Real-time systems - These systems are where data and instructions are processed at the same time it is generated further its application can be considered (within context) to be mission critical.
Example: Flying planes or controlling missiles. Delays in processing instructions can lead to accidents.
· Hybrid Systems – are dynamical systems with interacting continuous-time dynamics. Hybrid systems have been used to model several systems, including physical systems with impact, logic-dynamic controllers, and even Internet congestion.
Example: Hybrid computer – which exhibit features of analog computers and digital computers.
· Embedded Systems - Embedded systems are controlled by one or more main processing cores that are typically either microcontrollers or digital signal processors (DSP).
Example: portable devices such as digital watches and MP3 Players, traffic lights and factory controllers.
