Application Software and Operating Systems (AQA GCSE Computer Science): Flashcards
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Practise the cards
13 cards from this deck
Application software
Application software
Programs users use to complete specific tasks
Operating system (OS)
Operating system (OS)
Software that manages hardware & provides environment for apps
Multitasking
Multitasking
Computer appearing to perform multiple tasks simultaneously
How multitasking works
How multitasking works
OS rapidly switches between programs, giving each processor time
Pages (in memory mgmt)
Pages (in memory mgmt)
Fixed-size blocks that RAM is divided into
Peripherals
Peripherals
External devices like keyboards, mice, printers, cameras
Device drivers
Device drivers
Special programs enabling peripherals to communicate with PC
API
API
Rules for programs to communicate with the OS
5 key functions of OS
5 key functions of OS
Processor, memory, I/O, application, security management
Patches
Patches
Updates that fix security problems and other issues
OS role as bridge
OS role as bridge
Links users/apps and hardware, handling technical tasks
Device manager
Device manager
Controls data flow between computer and connected devices
Multi-core processor & OS
Multi-core processor & OS
OS can allocate different tasks to different cores