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Computing - OCR - GCSE - Computer Software
Descripción
GCSE Computing Mapa Mental sobre Computing - OCR - GCSE - Computer Software, creado por Josh Anderson el 12/02/2016.
Sin etiquetas
computing gcse
gcse
computing
computer sciences gcse
computer sciences
software
open source software
computer
computer gcse
computing
gcse
Mapa Mental por
Josh Anderson
, actualizado hace más de 1 año
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Creado por
Josh Anderson
hace más de 8 años
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Resumen del Recurso
Computing - OCR - GCSE - Computer Software
Collection of instructions that allow the user to interact with a computer
Directs processor to perform specific operations
Links hardware and software together
Not to be confused with computer hardware, the physical parts of computers
Types of software
Application software
Performs specific tasks for users
Email
Word processing
Browser
System software
Programs that control the operation of the computer
Proprietary software
Owned by an individual/company
Usually developer
Source code kept hidden
Open Source software
Source code made available
Modified by anyone
Kernel
Section of operating system that controls others
Memory management
Prevents multiple programs interacting with the same memory
Multi-tasking
Allows programs to work overlapping - one program uses one section whilst another uses another.
User interface
What the user sees
Shell
Command line
GUI - Graphical user interface
Security
Distinguishes between legitimate and illegitimate program requests and authenticates requests
Peripheral management
Manages input devices using drivers on behalf of the programs
Utility programs
Security
Antivirus - a program that detects and eliminates malicious software
Firewall - A network system that controls and filters incoming and outgoing traffic
Spyware - software that gathers and sends information about a host
Disk organisation
Formatting
Partitioning sections of secondary storage before file storage
Defragmentation
Reorganising related data on a disk
File transfer
Allows files to be moved, copied, deleted, etc.
System maintenance
System clean-up tools
Speeds up performance by deleting old files
Automatic updating
Searches online to find and download new software
System information and diagnostics
Tells you information about your device and checks if it is functioning correctly
Types of software
Custom written
Specific to the needs of the user
Off the shelf
Bought programs that are aimed at meeting the needs of users
Proprietary (closed source)
Open source
Freely available and can be modified and used
Proprietary (Closed source)
Source code not public, licenses needed for software, might not be need specific
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