9 in the Maths for I.T Digital Learning sessions - This time the theme is the Hexadecimal number system.
Tasks incorporated include the following;
Hex to Binary
Binary to Hex
and more...
Understandable and user-friendly way to master the Hex way of working.
Conversion of Number Systems
Number System is a method of representing Numbers on the Number Line with the help of a set of Symbols and rules. These symbols range from 0-9 and are termed as digits. Number System is used to perform mathematical computations ranging from great scientific calculations to calculations like counting the number of Toys for a Kid or Number chocolates remaining in the box. Number Systems comprise of multiple types based on the base value for its digits.
A numeral system (or system of numeration) is a writing system for expressing numbers; that is, a mathematical notation for representing numbers of a given set, using digits or other symbols in a consistent manner. It can be seen as the context that allows the symbols "11" to be interpreted as the binary symbol for three, the decimal symbol for eleven, or a symbol for other numbers in different bases.
The 10th Digital Learning Maths for IT sessions - The theme this time being the OCTAL number system which is used widely in computing circles - IP addressing being one.
Some straight forward conversion tasks for you!
Conversion of Number Systems
Number System is a method of representing Numbers on the Number Line with the help of a set of Symbols and rules. These symbols range from 0-9 and are termed as digits. Number System is used to perform mathematical computations ranging from great scientific calculations to calculations like counting the number of Toys for a Kid or Number chocolates remaining in the box. Number Systems comprise of multiple types based on the base value for its digits.
A numeral system (or system of numeration) is a writing system for expressing numbers; that is, a mathematical notation for representing numbers of a given set, using digits or other symbols in a consistent manner. It can be seen as the context that allows the symbols "11" to be interpreted as the binary symbol for three, the decimal symbol for eleven, or a symbol for other numbers in different bases.
The 10th Digital Learning Maths for IT sessions - The theme this time being the OCTAL number system which is used widely in computing circles - IP addressing being one.
Some straight forward conversion tasks for you!
To Download this click on the link below:-
http://www29.zippyshare.com/v/42478054/file.html
Number System
Decimal Number System
Binary Number System
Why Binary?
Octal Number System
Hexadecimal Number System
Relationship between Hexadecimal, Octal, Decimal, and Binary
Number Conversions
Binary addition, Binary subtraction, Negative number representation, Subtraction using 1’s complement and 2’s complement, Binary multiplication and division, Arithmetic in octal, hexadecimal number system, BCD and Excess – 3 arithmetic
Contents:
1.What is number system?
2.Conversions of number from one radix to another
3.Complements (1's, 2's, 9's, 10's)
4.Binary Arithmetic ( Addition, subtraction, multiplication, division)
Computer Science - Hexadecimal
You will be able to learn how to calculate hexadecimal conversion calculations along with what hexadecimal is. This presentation will help with your gcse or a level studies or just learning about computer systems. There are also some questions with answers.
Number 9 in the Maths for I.T Digital Learning sessions - This time the theme is the Hexadecimal number system.
Tasks incorporated include the following;
Hex to Binary
Binary to Hex
and more...
Understandable and user-friendly way to master the Hex way of working.
To Download this click on the link below:-
http://www29.zippyshare.com/v/42478054/file.html
Number System
Decimal Number System
Binary Number System
Why Binary?
Octal Number System
Hexadecimal Number System
Relationship between Hexadecimal, Octal, Decimal, and Binary
Number Conversions
Binary addition, Binary subtraction, Negative number representation, Subtraction using 1’s complement and 2’s complement, Binary multiplication and division, Arithmetic in octal, hexadecimal number system, BCD and Excess – 3 arithmetic
Contents:
1.What is number system?
2.Conversions of number from one radix to another
3.Complements (1's, 2's, 9's, 10's)
4.Binary Arithmetic ( Addition, subtraction, multiplication, division)
Computer Science - Hexadecimal
You will be able to learn how to calculate hexadecimal conversion calculations along with what hexadecimal is. This presentation will help with your gcse or a level studies or just learning about computer systems. There are also some questions with answers.
Number 9 in the Maths for I.T Digital Learning sessions - This time the theme is the Hexadecimal number system.
Tasks incorporated include the following;
Hex to Binary
Binary to Hex
and more...
Understandable and user-friendly way to master the Hex way of working.
Modern networking for php developers - Dutch PHP conference 2015SynchroM
Many developers are stuck in the world of old-school IPv4 - it's an easy and comfortable place to be! But beneath the cosy world of PHP, your network layer has been undergoing major changes that might be outside your comfort zone. IPv6, SPDY (aka HTTP/2.0) and SSL are all important technologies that you need to get to grips with, both inside and outside PHP. This talk covers the key features of these technologies and how you can use them to improve your app's availability, performance and security.
This talk was presented at the Dutch PHP conference 2015
Reviews core networking concepts relevant for the Cloud practitioner. We use AWS as the platform. However the content is generally applicable across clouds.
Note: The instructor-led version of this presentation is at:
https://www.udemy.com/course/primer-for-the-aws-cloud-networking/
The Udemy.com course titled Primer for the AWS Cloud: Networking.
A very small introduction to IP version 6 presented by Michael Dabydeen to the 2nd Year Students in the CSI 2103 class at the University of Guyana Berbice Campus, on Wednesday Nov 7th, 2012
Size, Number of addresses, Comparison to IPv4, header format, Addressing Format, zero compression, Ports, network prefix, address allocation, Multicast instead of Broadcast, auto configuration,
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
2. Hexadecimal Number System
• Topic Definitions
• A Question!
• Lesson learning outcomes
• Hex Character Range
• Binary – Hex Conversion
• Hex – Binary Conversion
• Hex – Denary Conversion
3. • Hexadecimal: "Hexadecimal" means "based on 16" (From Greek hexa:
"six" and Latin decima: "a tenth part").
• Decimal: Based on 10; Example: the numbers we use in everyday life
are decimal numbers, because there are 10 of them
(0,1,2,3,4,5,6,7,8 and 9).
• Denary: Same as Decimal – Base 10
• Binary: The word binary comes from "Bi-" meaning two. We see "bi-" in
words such as "bicycle" (two wheels) or "binocular" (two eyes).
Binary only uses 2 digits; 1 & 0
• Octal: An Octal Number uses only these 8 digits: 0, 1, 2, 3, 4, 5, 6 and
7 Examples:
• 10 in Octal equals 8 in the Decimal Number System.
• 167 in Octal equals 119 in the Decimal Number System.
Also called Base 8.
Definitions:
4. • Identify the concept of Hex
• Establish the purpose of Hex
• Compare Base 2, Base 10 and Base 16
• Convert Hex to Denary and Binary – And Back
6. By the end of this session:
All will be able to convert positive denary whole
numbers (0-255) into 2-digit hexadecimal
numbers and vice versa
Most will be able to convert between binary and
hexadecimal equivalents of the same number
Some will be able to explain the use of
hexadecimal numbers to represent binary
numbers
7. Hexadecimal Character Range:
(16 Values)
0 1 2 3 4 5 6 7
8 9 A B C D E F
The word "Hexadecimal" means "based on 16"
(From Greek hexa: "six" and Latin decima: "a
tenth part").
8. Binary – Hex Conversion:
To convert binary to hexadecimal you need to
break it down into nibbles (blocks of 4 bits).
1 0 0 0
1st Nibble
1 1 0 1
2nd Nibble
(The binary number 10001101 in denary is: 141)
Binary to Denary Calculation Table
Denary Values 128 64 32 16 8 4 2 1
Binary Values 1 0 0 0 1 1 0 1
Explanation: 128 + 8 + 4 + 1 = 141
9. Binary – Hex Conversion (2):
We now convert each nibble into Denary;
Binary to Denary Calculation Table – First Nibble
Denary Values 128 64 32 16 8 4 2 1
Binary Values 0 0 0 0 1 0 0 0
First Nibble Value: 8
Binary to Denary Calculation Table – Second Nibble
Denary Values 128 64 32 16 8 4 2 1
Binary Values 0 0 0 0 1 1 0 1
Second Nibble
Value:
13
10. Binary – Hex Conversion (3):
We now convert 8 and 13 into Hexadecimal;
Remember that 13 = D in hexadecimal:
141 would be represented as 8D.
Hex Values: 0 1 2 3 4 5 6 7
Denary Values: 0 1 2 3 4 5 6 7
Hex Values: 8 9 A B C D E F
Denary Values: 8 9 10 11 12 13 14 15
Hex Conversion: 8D
11. Your Turn:
Binary-Hex conversions
1. Convert 11111111 to hex
2. Convert 11011011 to hex
3. Convert 10010011 to hex
4. Convert 11000011 to hex
5. Convert 00110110 to hex
12. Your Turn:
Denary-Hex conversions
1. Convert 4010 to hex
2. Convert 6410 to hex
3. Convert 14010 to hex
Note:
Simply convert your Denary values to
Binary, then Binary to Hex
13. Your Turn:
Binary-Hex conversions –
Answers:
1. Convert 11111111 to hex –
2. Convert 11011011 to hex -
3. Convert 10010011 to hex –
4. Convert 11000011 to hex –
5. Convert 00110110 to hex -
Note: Hex is also written; 3616
0Fh
DBh
93h
C3h
36h
15. Hex - Binary Conversion:
To convert hexadecimal to binary you just reverse
the process.
Convert each part of the hexadecimal number into
nibbles of binary numbers.
For Example:
Calculation Table
Hex Value 8 D
Denary Values 8 4 2 1 8 4 2 1
Binary Values 1 0 0 0 1 1 0 1
16. Hex – Binary
Conversion Table:
Denary Binary Hex Denary Binary Hex
0 0000 0 8 1000 8
1 0001 1 9 1001 9
2 0010 2 10 1010 A
3 0011 3 11 1011 B
4 0100 4 12 1100 C
5 0101 5 13 1101 D
6 0110 6 14 1110 E
7 0111 7 15 1111 F
17. Your Turn:
Hex-Binary conversions
1. Convert 4D to binary
2. Convert 2F to binary
3. Convert 72 to binary
4. Convert 90 to binary
5. Convert 3B to binary
Note: Hex is also written; 3616
18. Your Turn:
Hex-Binary conversions
Answers:
1. Convert 4D to binary -
2. Convert 2F to binary -
3. Convert 72 to binary -
4. Convert 90 to binary -
5. Convert 3B to binary -
01001101
00101111
01001000
01011010
00111011
19. Your Turn:
Hex - Denary conversions
1. Convert 4D to denary -
2. Convert 2F to denary -
3. Convert 91 to denary -
4. Convert AA to denary -
5. Convert F1 to denary -
20. Your Turn:
Hex - Denary conversions
Answers:
1. Convert 4D to denary -
2. Convert 2F to denary -
3. Convert 91 to denary -
4. Convert AA to denary -
5. Convert F1 to denary -
77
47
145
170
241
22. Why Do We Need IPv6?
• The driver for the uptake of 128-bit IPv6 will be the
shortage of 32-bit IPv4 addresses on the internet. IPv6
is also more secure. For example, it can overcome the
lack of security and prioritization of IPv4 datagrams.
• In the mid-term we are beset with compatibility problems
because IPv4-only clients cannot communicate with
IPv6-only routers. Thus for most business scenarios
migrating to an IPv6-only network is not the answer just
yet.
• Until IPv4 is switched off, networks will need to cater for
both protocol stacks, and develop strategies to work
seamlessly with both types of IP node.
23. Five Useful IPv6 Concepts
• Stateful IP addresses are given out by a DHCP server. Usually DHCP in addition
to the IPv6 hex number, the clients get the address of the default gateway and
probably a DNS server or two.
• Stateless IPv6 addresses are assigned by the host itself, rather like APIPA in
IPv4. This is what happens if there is no DHCP or manual address assignment.
• Link-local IPv6 addresses only allow connections with neighbours on that subnet
or 'link'. You can identify Link-local addresses because they begin with FE80, also
(FC and FD) naturally, Link-local addresses are not forwarded by routers.
• Site-local means the IPv6 is routable, but not to the internet, thus hosts with Site-
Local IPv6 addresses can use private (not ICANN) IP addresses, AND can
connect to any other Site-local address within the organisation. Such site-local
addresses all start with FEC0.
• Neighbour Discovery (ND) This concepts means that machines determine
information about their nearest router. The idea is also that if an IPv6 stack can
obtain information about other nodes, then you won't get the problem of duplicate
IP addresses.
24. IPv6 Changes in Windows 8
• Any operating systems running a dual stack (IPv4 and IPv6) is going to face
connectivity problems. Naturally, if there is connectivity for both IPv4 and IPv6
then Windows 8 (or 7) will favour the IPv6 path. What irritated Windows 7 users is
where the OS cannot detect an IPv6 path and there is a delay while it figures out
how long to wait trying the non-existent IPv6 path.
• In Windows 8, Microsoft has developed a better algorithm than Windows 7, it
checks the state of the IPv6 path at initial configuration. If no IPv6 connectivity
exists it will be marked as unreachable, and the IPv4 will seek the traditional IPv4
route.
• There are also changes on the Windows Server 2012, in particular NAT64/DNS64
is now built-in. This caters for networks running IPv6 internally, but using IPv4 for
the internet. Incidentally, PowerShell v3 on the Server 2012 provides better
cmdlets to manage IPv6 configuration options.
25. IPv6 Maths - See the Big Picture
• Experts tell us that IPv4 would generate 4,294,967,296 possible IP addresses. In
practice it turned out there were only about 17 million useful addresses.
• With the 128bit IPv6 addresses, the same experts say there should be
340,300,000,000,000,000,000,000,000,000,000,000,000,000 IP addresses.
• However, there may be as few as: 18,000,000,000,000 useful IPv6
addresses. This shortfall is partly due to reserved and unassigned bits in the
128bit address.
• The other reason for this reduced number of usable IP addresses is a design
feature whereby 64-bits are taken up with the Interface ID (Mac Number).
• Even with this surprisingly low estimate, it still means that everybody on the planet
could be given 3,000 IP addresses. One day, we could see one IPv6 for the
computer, one for the phone, car, fridge, cooker and every other appliance - then
some.
26. IPv6 Address
Making Sense of the Actual Hex Numbers
• IPv6 uses hexadecimal, which is base 16 this is why you now see IP addresses
containing not only numbers, but also the letters ABCDEF, for example:
2001:0618:71B3:08C3:1319:8C2D:0271:6017
• As you can see, 128-bit numbers are split into 8 groups of 16bit.
• IPv4 addresses are base 10, another difference is that each IPv6 group is
separated by a colon rather than a dot. It is readily apparent that this base 16
scheme helps to increase the available IP addresses. Surprisingly, the hex letters
are not case sensitive.
• Obviously, private networks won't need any where near the full range of IPv6
numbers; as a result many of the address values will be zero. In this
circumstance look for compression of the zeros, instead of
FD01:0000:0000:0000:0000:0000:0000:0005, you will see FD01::5. Note the
double colon :: indicating compression of the intervening zeros. Thus the term
'compression' in IPv6 refers to the notation and not to the protocol packets
themselves. Remember that you can only use the double colon once in each IP
address.
27. IPv6 and MAC Address
• The biggest reason that there will be fewer IPv6 addresses than the theoretical
maximum is that each 64-bit number contains the MAC address of the host.
• While incorporating the hardware address reduces the available IPv6 nodes, it
makes this protocol more efficient, secure and useful than IPv4.
• Note how the DUID* above contains the Physical Address (MAC Address).
• *DUID = DHCP Unique Identifier.
IAID = Application Unique Identifier
30. Number Systems – Task:
Number Systems Working Together
Using a structured approach, complete a range of conversions between
the number systems discussed previously. The conversions needed
are:
• Decimal to Binary, Octal, Hexadecimal
• Binary to Decimal, Octal, Hexadecimal
• Octal to Decimal, Binary, Hexadecimal
• Hexadecimal to Decimal, Binary, Octal