Summary
Summary 1.5 - systems software
GCSE OCR COMPUTER SCIENCE J277 1.5. - systems software 1.5.1 - operating systems, 1.5.1 - utility software
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systems software is software designed ," .rf J""aX,"rftiiill; computer system.
do, An System (OS) is a complex piece of software found on most computer systems. Its main
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+ communicate with internal and external hardware via the device trackers
; provide a user interface, allowing the user to with the comnuter.
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; provide a for different to run
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I allow the computer to multi-task by controlling memory resources and the CPU
+ deal with file management andgj@ggEg!
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) manage svstem securiW and user accounts
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Operating systems use device drivgr sofYare to communicate with internal peripherals
connected to the computer system
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; hardware connected to the computer system Drivers asa the oukpvl-
signals between OS and hardware [-reo.h J.er,rte hc(s il-s ow n doure J;*,
+ when a computer is booted up, the will choose the correct device drivers for the hardware it detects. If
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new hardware is connected to the computer, the system will install the new, matching driver
.) device manufacturers may release updates to device drivers in order to fix bugs, add features or improve
the performance of the hardware. Updates maybe automatically installed by the OS, or manually by the user
Interface +
the user to_lnteract with the computer system.
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+GraphicalUserlnterfaces(GUI)arethemostcommon.Usesicons.', wrenus, pa,vtl-trS,.,.rinotora,6
+ Designed to be easy for everyday users by making them visual and interactive.
+ Moreuserfriendly CviSuql t lrT lrtraCFiW)
+ Morecontrol ( id,eq\ tw btgtnvr€vS)
- Uses more processing power
; Command Line Interfaces ( are text based. The user enters specific commands to complete tasks.
+ Uses less processing power |L; wr or€ cernzrvrnlq,hdS
+ Less resource heavy r'qr! uvro
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- Less control -q$./s
- Less user friendly () qe^ lo..^.. .. f"[ Lo-+
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