![](http://www.dansdata.com/images/hd555/hd555_800.jpg)
![](http://www.ireviewelectronics.com/wp-content/uploads/2007/02/canon-photo-printer.jpg)
![](http://www.germes-online.com/direct/dbimage/50311683/LCD_Monitor.jpg)
MONITOR
INPUT DEVICES
METHODS OF OPERATION
SINGLE PROGRAM MODE:
Runs with just one program at a time, with one user
MULTI-TASKING MODE/MULTI-PROGRAM MODE:
runs with two or more programs at a time with one user
MULTI-USER MODE:
Several users are able to use the same system together
MULTI-PROCESSOR MODE:
In larger systems,there will be more then one processor.The operating system allows the different processor to operate togeter and utilise the same memory.
EXAMPLES OF ANTI-VIRUS:
kasperskys, AVG , McAfee