A3 Computer software in an IT system Flashcards
Real Time Operating Systems (RTOS)
a software that processes data and executes tasks within strict time constraints
E.g air traffic control systems
Single User, Single Task OS
an OS that allows a single user to only perform one task at a time
Single User Multi Tasking OS
a system that allows a single user to run multiple applications at the same time.
Multi User OS
a computer system that allows multiple users to access and use the same operating system at the same time
E.g. Mainframes, supercomputers
the role of the operating system
Networking
Security
Memory Management
Multi Tasking
Device Drivers
Factors affecting the performance of an OS
Hardware
Malware
Virtual Memory
Utility Software
software designed to help to analyse, configure, optimise or maintain a computer
E.g. Disk defragmentation, Backups, Disk/Registry cleanup, Anti Virus, Firewall
Application Software
allows end users to perform tasks processing text, number, still and moving images and sound
- Productivity
Bespoke
Custom or Tailor made
Developed for a specific company or a specific task
Off the Shelf
As the name suggests, an off the shelf software application is ready to use
It has been developed for the mass-market
Proprietary
software that is owned by a company or individual and is distributed under a license that restricts how the software can be used
Open Sources
computer software that’s released under a license that allows users to: Use the software, Study the software, Change the software, Distribute the software, and Distribute the source code
Graphical User Interface (GUI)
a visual way for users to interact with electronic devices and software systems.
Command Line Interface
a text-based way to interact with a computer program or operating system by entering lines of text, called command lines
Menu Based Interface
a user interface that uses lists and graphics to guide users through a series of menus to complete a task.
