Software
- Created by: Aoifeowens
- Created on: 29-02-20 10:24
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- Software
- Utility programs
- Disc Defragmentation
- Rearranges the data on a hard disc so that all a data is stored together and it becomes quicker to access the files
- Backup
- A second copy of a file made and stored on a storage device in case the original file gets lost, or becomes corrupted or physically damaged
- Task scheduling
- Processor time is divided amongst a number of tasks. Uses time slices. Implemented using the round robin method.
- Disc Defragmentation
- Application software- programs designed for a end user to do a particular task.
- System software-includes the operating system and all utility programs that enable the computer to operate its hardware and application software.
- Allocating memory
- Organises the main memory between programs and data files as they are transferred to and from the hard disc
- Storage
- The operating system manages the storage of data and files on a external devices.
- Processing time
- Allocates processing time between the programs that are currently in use by dividing the time into a number of time slices and, depending on the priority of the tasks to be processed, each task is allocated a number of time slices.
- Allocating memory
- Modes of processing
- Real time processing
- data is processed immediately after it is inputted
- Data flies are updated before the next transaction takes place
- Out put generated is processed quickly enough to influence the next input received enough rot
- Air traffic control
- Batch processing
- Involves collecting groups of similar data over a period of tome
- Data isimput to a computer system at an off peak time without any human involvement.
- This type of processing suits application where data does not have to be processed immediately
- Billing systems
- Multi-user system
- Involves many users at different computers sharing the same processor
- Applications that make use of multi user systems include multiuser database management systems .
- Works by the operating system switching at high speed between the compurters, giving each one in turn a small amount of processor time known as a time slice
- Involves many users at different computers sharing the same processor
- Real time processing
- Anti virus software
- Software that scans flies stored on a computer system, looking for a virus, and compares these to a known database of viruses; it can eliminate a virus
- Utility programs
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