Using the computer Flashcards
What does the operating system do?
Set of programmes that control the running of the computer
An operating system…
- Loads and runs programmes
- Makes the best used of RAM
- Handels Inputs and Outputs
- Manages the security of the system
What are the types if operating systems?
- Single Program
- Batch Processing
- Multi-Programming
- Multi-Access
- Distributed System
- Process Control System
- Parallel Processing
What does HCI stand for?
Human Computer Interface
What does a Command Line Interface do?
The user types in a command at a prompt character
What are the advantages of Command Line Interface?
- The instructions are executed quickly
- They use less memory than other operating systems
What are the disadvantages of Command Line Interface?
- You need to learn the special instructions used
- Some commands and their options are very complex
What does a Graphical User Interface do?
Used WIMP (Windows, Icons, Menus, Pointers)
What are the advantages of Graphical User Interface?
- Low-Level ICT skills are needed
- Desktops can be customised
What is Speech Interface?
Spoken Commands using a Microphone
What are the advantages of Speech Interface?
- Useful if the user is unable to use their hands
- A user can issue commands while their hands are busy, such as pilot
What are the disadvantages of Speech Interface?
- People speak using different tones
- People speak different languages
What are the advantages of Menus?
- Easy to Navigate
- Nothing to learn because all options are displayed
What are the disadvantages of Menus?
- Some options may not mean anything to the user
- Sometimes difficult to find options as there are so many
What is Touch-Sensitive Device?
The position where the device is touches is sensed and used as input data
