A3 Peripheral devices and media
The features and uses of peripheral devices and media in IT systems to meet the needs
of individuals and organisations.
•
Peripheral devices used with other digital devices to form part of an IT system:
o
input devices, e.g. keyboard, touch screen, pointing devices (mouse, stylus,
touchpad, graphics tablets, microphone, scanner (2D and 3D), cameras,
sensors)
o
output devices, e.g. screens, projectors, printers (2D and 3D), actuators, motors,
accessibility devices
o
storage devices, e.g. USB flash drives, memory cards, hard drives (internal and
external), optical drives/discs, magnetic tape drives
o
accessibility devices, e.g. alternative keyboards, sip-and-puff systems, wands
and sticks, braille embossers.
•
Manual and automatic data processing.
•
Characteristics and implications of storage media used to form part of an
IT system, e.g. magnetic, solid state, optical.
A4 Computer software in an IT system
The concepts and implications of the use of, and relationships between, hardware and
software that form large- and small-scale IT systems and their impact on organisations
and their stakeholders.
•
Types of operating system, e.g. real time, embedded, multi-user.
•
The role of the operating system in managing:
o
networking
o
security
o
memory management
o
multitasking
o
device drivers.
•
Factors affecting the choice and use of user interfaces (graphical, command
line, menu-based, adapted):
o
the features and characteristics of different interfaces
o
how and when they are used
o
how interfaces affect users
o
how interfaces affect features and performance of computer systems.
•
Factors affecting use and performance of an operating system, e.g. amount
of data being processed, hardware specifications, compatibility with other
systems.
•
Utility software (including: antivirus/anti-malware, backup software,
compression tools, disk analysers, disk defragmenters, disk partitioners,
encryption software, file managers, firewall, network utilities):
o
the purpose, features and uses of utility software
o
factors affecting the choice, use and performance of utility software.
•
Application software, including: communications software, computer-aided
design (CAD), database management systems (DBMS), digital graphics and
animation, enterprise resource packages (ERP), entertainment software,
office software:
o
the purpose, features and uses of application software
o
factors affecting the choice, use and performance of application software.
U
NIT
1:
I
NFORMATION
T
ECHNOLOGY
S
YSTEMS
–
S
TRATEGY
,
M
ANAGEMENT AND
I
NFRASTRUCTURE
Pearson BTEC International Level 3 Qualifications in Information Technology –
Specification – Issue 3 – September 2022 © Pearson Education Limited 2022
31
•
The principles and implications of open source and proprietary operating
systems and software.
•
The features of common file types and formats used for:
o
images, e.g. GIF, PNG, JPEG, RAW, SVG
o
videos, e.g. MPEG, AVI
o
audio, e.g. MP3, WAV
o
application software, e.g. DOC, RTF, XLS, XML, PDF.
•
The implications on IT systems, organisations and their stakeholders of the use
and selection of file types and formats.
Dostları ilə paylaş: |