Edexcel curriculum (2015)
Inside the CPU
LAN, WAN and PAN
The world wide web
HTML and CSS
A collection of programs that manages the hardware and software of a computer system, including sharing the computer’s time, memory, hardware and other resources.
What is a GUI? Do we care about it?
Function of operating system
1. File management
2. CPU and Input / output management
3. Resource allocation - Makes things like memory or printers available to all software on the computer
4. Process management
5. Network management - Allows the computer to work on a network
6. User management - GUI / security features / task manager
Without an operating system, the hardware cannot function and the user cannot use the computer (even though the user rarely interacts with the operating system itself because there is application software between the operating system and the user).
The user is removed from the computer’s hardware by the operating system and application software.