U
NIT
24:
T
ECHNICAL
F
UNDAMENTALS FOR
C
OMPUTING
P
ROFESSIONALS
Pearson BTEC International Level 3 Qualifications in Information Technology –
Specification – Issue 3 – September 2022 © Pearson Education Limited 2022
320
Summary of unit
Learning aim
Key content areas
Assessment approach
A
Explore the
mathematics,
logic and
processes of computer
systems
A1
Number systems
A2
Coding and scripting
A portfolio of evidence
detailing the use of shell
scripts and computer
programs to meet a range
of identified needs.
B
Investigate
issues
relating to the use of
digital systems
B1
Cybersecurity
B2
Health and safety
issues
B3
Moral and ethical
issues
A report
analysing potential
issues, in relation to
technology for an identified
organisation, including:
•
a review of its current
practices and systems
and identification of:
o
potential security
issues
o
social,
moral and
ethical
considerations
•
suggestions for how
identified issues can be
addressed
•
an evaluation of the
impact of implementing
suggestions on the
company and wider
stakeholders.
C
Design a computer
infrastructure solution
C1
Computer systems
architecture
C2
Memory and
storage
C3
Data communication
C4
Network design
A portfolio of evidence
detailing the design of a
computer infrastructure
solution to meet the needs
of an identified organisation,
which may include:
•
design documents for an
infrastructure solution
•
feedback on the
documentation/designs
collected from others
•
improved version of the
documentation /design
•
written justification of
design decisions
•
an evaluation of the
designs.
U
NIT
:
24:
T
ECHNICAL
F
UNDAMENTALS FOR
C
OMPUTING
P
ROFESSIONALS
Pearson BTEC International Level 3 Qualifications in Information Technology –
Specification – Issue 3 – September 2022 © Pearson Education Limited 2022
321
Content
Learning aim A: Explore the mathematics, logic and processes of computer
systems
A1 Number systems
The use and application of mathematical principles and number systems within
computing systems.
•
Number systems used in computer systems, including:
o
units and scales of digital data (bit, byte, kilobyte, megabyte)
o
binary
o
hexadecimal.
•
Why computers use binary and how it is used to represent all data, e.g. number,
characters, image sound.
•
Mathematical operations performed on denary,
binary and hexadecimal
number systems, including:
o
conversion of numbers between number systems
o
performing addition, subtraction, division and multiplication (including binary
shifts)
o
use of binary to represent negative and floating-point numbers
o
the concept of overflow errors
o
relationship between binary and file size
o
calculation of files sizes for sound, text and images.
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