4502694
Descrição
Mapa Mental por Josh Anderson, atualizado more than 1 year ago
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Criado por Josh Anderson
quase 9 anos atrás
|
|
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
- Directs processor to perform specific operations
- 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
- Performs specific tasks for users
- System software
- Programs that control the
operation of the computer
- Programs that control the
operation of the computer
- Proprietary software
- Owned by an
individual/company
- Usually developer
- Usually developer
- Source code kept hidden
- Owned by an
individual/company
- Open Source software
- Source code made available
- Modified by anyone
- Source code made available
- Application software
- Kernel
- Section of operating system
that controls others
- Memory management
- Prevents multiple
programs interacting
with the same memory
- Prevents multiple
programs interacting
with the same memory
- Multi-tasking
- Allows programs to work
overlapping - one program
uses one section whilst
another uses another.
- Allows programs to work
overlapping - one program
uses one section whilst
another uses another.
- Memory management
- Section of operating system
that controls others
- User interface
- What the user sees
- Shell
- Command line
- GUI - Graphical user interface
- What the user sees
- Security
- Distinguishes between
legitimate and illegitimate
program requests and
authenticates requests
- Distinguishes between
legitimate and illegitimate
program requests and
authenticates requests
- Peripheral
management
- Manages input devices
using drivers on behalf of
the programs
- 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
- Antivirus - a program
that detects and
eliminates malicious
software
- Disk organisation
- Formatting
- Partitioning sections of
secondary storage before
file storage
- Partitioning sections of
secondary storage before
file storage
- Defragmentation
- Reorganising related data on a disk
- Reorganising related data on a disk
- File transfer
- Allows files to be moved, copied, deleted, etc.
- Allows files to be moved, copied, deleted, etc.
- Formatting
- System maintenance
- System
clean-up tools
- Speeds up
performance by
deleting old files
- Speeds up
performance by
deleting old files
- Automatic updating
- Searches online to
find and download
new software
- 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
- Tells you information
about your device and
checks if it is functioning
correctly
- System
clean-up tools
- Security
- Types of software
- Custom written
- Specific to the
needs of the user
- Specific to the
needs of the user
- Off the shelf
- Bought programs that
are aimed at meeting
the needs of users
- Proprietary
(closed source)
- Bought programs that
are aimed at meeting
the needs of users
- Open source
- Freely available and can be
modified and used
- Freely available and can be
modified and used
- Proprietary
(Closed source)
- Source code not public,
licenses needed for software,
might not be need specific
- Source code not public,
licenses needed for software,
might not be need specific
- Custom written
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