OCR J277 - 1.5 Systems Software

Used to carry out tasks on a computer

Running multiple applications/processes at same time

Move files & free space together in same location

Provide a platform to run Application Software and to Maintain the computer system

Systems Software manages & controls the operations of a computer

Examine ingoing and outgoing traffic & Prevent unauthorised access

Reduces the size of a file to use less storage space and faster transmission

Creates a file system to organise files and directories, manages data files

Scrambles Data to Protect data from being read if intercepted or stolen

Allow more than one person to log on to and use the computer/device

The way the user and computer system interact, in using input/output devices & software

Transfers instructions and data in to and out of memory (RAM)

Software use to Protect computer data against Malware

Software translates commands from the OS into hardware specific commands

Enables use and control of devices connected to a computer; by sending them commands