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Fun with Binary: Convert Numbers & Stay Safe Online!

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AbigailTheFish

07/09/2023

Computer Science

Binary, Logic Gates, Fetch Decode Execute Cycle, E-Safety (Summarised)

Fun with Binary: Convert Numbers & Stay Safe Online!

The binary system forms the foundation of digital technology, using 0s and 1s to represent data and codes. This essential computing concept enables everything from basic calculations to complex computer operations, with practical applications in CPU processing, number system conversions, and digital logic.

• The binary number system (base-2) consists of only two digits (0 and 1) representing off and on states
• Converting between binary and decimal requires understanding place values and systematic calculation methods
• The CPU (Central Processing Unit) processes data through the fetch-decode-execute cycle
• Computer systems comprise input devices, processing units, and output devices
• Digital safety, including password protection and cyberbullying awareness, is crucial in modern computing

...

07/09/2023

167

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

View

Fetch-Decode-Execute Cycle and E-Safety

This section covers the fetch-decode-execute cycle and introduces important concepts related to online safety.

Fetch-Decode-Execute Cycle The document explains the basic steps of how a CPU processes instructions:

  1. Fetch: The CPU retrieves the instruction from RAM.
  2. Decode: The CPU interprets the instruction to determine what needs to be done.
  3. Execute: The CPU carries out the instruction.

Highlight: The fetch-decode-execute cycle is a fundamental process in computer architecture, describing how the CPU handles instructions.

E-Safety The section on e-safety covers important aspects of staying safe online:

Definition: E-safety refers to understanding what information is safe to share online and what should be kept private.

Password Security:

  • A good password should include a mix of random words, upper and lowercase letters, numbers, and symbols.
  • Passwords should never be shared with others.

Online Gaming Safety: When encountering a problematic user in an online game, follow these steps:

  1. Leave the game
  2. Report the user
  3. Block the user

Highlight: These steps are crucial for internet safety for 16-18 year olds and promote online safety for students.

Cyberbullying The document defines cyberbullying and its various forms:

Definition: Cyberbullying is bullying that occurs through digital devices like cell phones, computers, and tablets, via SMS, text, apps, or social media.

Digital Footprint The concept of a digital footprint is introduced:

Definition: A digital footprint is the trail of data and information left behind when using digital platforms, including intentional and unintentional records of online activities and interactions.

This information is particularly relevant for social media safety for teens and online safety for parents.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

View

Logic Gates and Algorithms

This section covers fundamental concepts in computer science: logic gates and algorithms.

Logic Gates The document introduces three basic logic gates: AND, OR, and NOT. Truth tables are provided for each gate to illustrate their operations.

Example: AND Gate Truth Table

  • Inputs (A, B): 0,0 | 0,1 | 1,0 | 1,1
  • Output (Y = A.B): 0 | 0 | 0 | 1

Example: OR Gate Truth Table

  • Inputs (A, B): 0,0 | 0,1 | 1,0 | 1,1
  • Output (Y = A+B): 0 | 1 | 1 | 1

Example: NOT Gate Truth Table

  • Input (A): 0 | 1
  • Output: 1 | 0

Algorithms The document defines algorithms and introduces two common searching algorithms:

Definition: An algorithm is a list of instructions used to solve a problem by breaking it down into steps that lead to a solution.

  1. Binary Search:

    • Can only be performed on sorted data
    • Starts at the middle value and eliminates half the data in each step
    • Repeats until the search element is found or determined not to exist
  2. Linear Search:

    • Can be performed on unsorted data
    • Examines each element in turn until it finds a match or reaches the end of the list

Highlight: Understanding these algorithms is crucial for learning how to convert binary to denary in Python and implementing efficient search functions.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

View

Flowchart Symbols and Computer Networks

This section introduces flowchart symbols and basic concepts of computer networks.

Flowchart Symbols The document provides a list of common flowchart symbols and their meanings:

  1. Terminator (Oval): Represents start or end points
  2. Arrows: Show relationships between shapes
  3. Input/Output (Parallelogram): Represents input or output processes
  4. Process (Rectangle): Represents a process or action
  5. Decision (Diamond): Indicates a decision point
  6. Function: Not explicitly defined in the provided text

Highlight: Flowcharts are essential tools for visualizing algorithms and processes in computer science.

Computer Networks The document introduces the concept of computer networks and their types:

Definition: A computer network is two or more computers connected together to share resources, most commonly an Internet connection, but also printers or file servers.

Types of Networks:

  1. Local Area Network (LAN):

    • Connects computers in close proximity, usually within one building
  2. Wide Area Network (WAN):

    • Connects computers in different buildings, cities, or countries
    • The Internet is an example of a global WAN

Vocabulary: Network topology refers to the structure or arrangement of network elements. Common topologies include bus and star.

HTML (Hypertext Markup Language) The document briefly mentions HTML:

Definition: HTML is the programming language that enables browsers to display text and graphics on a web page.

Target Audience The concept of target audience is introduced:

Definition: A target audience is the specific group of people for whom a product is made.

Highlight: Understanding networks and HTML is crucial for developing online safety for kids and promoting safe internet use.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

View

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

View

Computer Networks Fundamentals

This section introduces basic networking concepts and topologies.

Definition: A computer network is an interconnected system of computers sharing resources.

Vocabulary:

  • LAN (Local Area Network): Connects nearby computers
  • WAN (Wide Area Network): Connects geographically distant computers

Highlight: Network topology refers to the physical or logical arrangement of network components.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

View

Network Topologies and Web Technologies

This section covers specific network configurations and web-related technologies.

Definition: Network topology determines how devices in a network are connected and communicate.

Example: Bus topology connects all devices to a single cable, while star topology connects devices to a central hub.

Vocabulary: HTML (Hypertext Markup Language) is the standard language for creating web pages.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

View

Target Audience and Client Considerations

This section addresses the importance of identifying and understanding target audiences in product development.

Definition: Target audience refers to the specific group of people for whom a product or service is designed.

Highlight: Understanding your target audience is crucial for effective product development and marketing strategies.

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Computer Science

167

7 Sept 2023

8 pages

Fun with Binary: Convert Numbers & Stay Safe Online!

user profile picture

AbigailTheFish

@fishythefish

The binary system forms the foundation of digital technology, using 0s and 1s to represent data and codes. This essential computing concept enables everything from basic calculations to complex computer operations, with practical applications in CPU processing, number system conversions,

... Show more
binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Fetch-Decode-Execute Cycle and E-Safety

This section covers the fetch-decode-execute cycle and introduces important concepts related to online safety.

Fetch-Decode-Execute Cycle The document explains the basic steps of how a CPU processes instructions:

  1. Fetch: The CPU retrieves the instruction from RAM.
  2. Decode: The CPU interprets the instruction to determine what needs to be done.
  3. Execute: The CPU carries out the instruction.

Highlight: The fetch-decode-execute cycle is a fundamental process in computer architecture, describing how the CPU handles instructions.

E-Safety The section on e-safety covers important aspects of staying safe online:

Definition: E-safety refers to understanding what information is safe to share online and what should be kept private.

Password Security:

  • A good password should include a mix of random words, upper and lowercase letters, numbers, and symbols.
  • Passwords should never be shared with others.

Online Gaming Safety: When encountering a problematic user in an online game, follow these steps:

  1. Leave the game
  2. Report the user
  3. Block the user

Highlight: These steps are crucial for internet safety for 16-18 year olds and promote online safety for students.

Cyberbullying The document defines cyberbullying and its various forms:

Definition: Cyberbullying is bullying that occurs through digital devices like cell phones, computers, and tablets, via SMS, text, apps, or social media.

Digital Footprint The concept of a digital footprint is introduced:

Definition: A digital footprint is the trail of data and information left behind when using digital platforms, including intentional and unintentional records of online activities and interactions.

This information is particularly relevant for social media safety for teens and online safety for parents.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Logic Gates and Algorithms

This section covers fundamental concepts in computer science: logic gates and algorithms.

Logic Gates The document introduces three basic logic gates: AND, OR, and NOT. Truth tables are provided for each gate to illustrate their operations.

Example: AND Gate Truth Table

  • Inputs (A, B): 0,0 | 0,1 | 1,0 | 1,1
  • Output (Y = A.B): 0 | 0 | 0 | 1

Example: OR Gate Truth Table

  • Inputs (A, B): 0,0 | 0,1 | 1,0 | 1,1
  • Output (Y = A+B): 0 | 1 | 1 | 1

Example: NOT Gate Truth Table

  • Input (A): 0 | 1
  • Output: 1 | 0

Algorithms The document defines algorithms and introduces two common searching algorithms:

Definition: An algorithm is a list of instructions used to solve a problem by breaking it down into steps that lead to a solution.

  1. Binary Search:

    • Can only be performed on sorted data
    • Starts at the middle value and eliminates half the data in each step
    • Repeats until the search element is found or determined not to exist
  2. Linear Search:

    • Can be performed on unsorted data
    • Examines each element in turn until it finds a match or reaches the end of the list

Highlight: Understanding these algorithms is crucial for learning how to convert binary to denary in Python and implementing efficient search functions.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Flowchart Symbols and Computer Networks

This section introduces flowchart symbols and basic concepts of computer networks.

Flowchart Symbols The document provides a list of common flowchart symbols and their meanings:

  1. Terminator (Oval): Represents start or end points
  2. Arrows: Show relationships between shapes
  3. Input/Output (Parallelogram): Represents input or output processes
  4. Process (Rectangle): Represents a process or action
  5. Decision (Diamond): Indicates a decision point
  6. Function: Not explicitly defined in the provided text

Highlight: Flowcharts are essential tools for visualizing algorithms and processes in computer science.

Computer Networks The document introduces the concept of computer networks and their types:

Definition: A computer network is two or more computers connected together to share resources, most commonly an Internet connection, but also printers or file servers.

Types of Networks:

  1. Local Area Network (LAN):

    • Connects computers in close proximity, usually within one building
  2. Wide Area Network (WAN):

    • Connects computers in different buildings, cities, or countries
    • The Internet is an example of a global WAN

Vocabulary: Network topology refers to the structure or arrangement of network elements. Common topologies include bus and star.

HTML (Hypertext Markup Language) The document briefly mentions HTML:

Definition: HTML is the programming language that enables browsers to display text and graphics on a web page.

Target Audience The concept of target audience is introduced:

Definition: A target audience is the specific group of people for whom a product is made.

Highlight: Understanding networks and HTML is crucial for developing online safety for kids and promoting safe internet use.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Computer Networks Fundamentals

This section introduces basic networking concepts and topologies.

Definition: A computer network is an interconnected system of computers sharing resources.

Vocabulary:

  • LAN (Local Area Network): Connects nearby computers
  • WAN (Wide Area Network): Connects geographically distant computers

Highlight: Network topology refers to the physical or logical arrangement of network components.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Network Topologies and Web Technologies

This section covers specific network configurations and web-related technologies.

Definition: Network topology determines how devices in a network are connected and communicate.

Example: Bus topology connects all devices to a single cable, while star topology connects devices to a central hub.

Vocabulary: HTML (Hypertext Markup Language) is the standard language for creating web pages.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Target Audience and Client Considerations

This section addresses the importance of identifying and understanding target audiences in product development.

Definition: Target audience refers to the specific group of people for whom a product or service is designed.

Highlight: Understanding your target audience is crucial for effective product development and marketing strategies.

binary
Revision Sheet
A number system that uses Os and 1s to represent codes and
data. The binary system is the foundation on which digital

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Binary Number Systems and CPU Components

This section introduces binary number systems and CPU components, which are fundamental concepts in computer science.

Binary Number System The binary system uses only 0s and 1s to represent data, forming the foundation of digital technology. It corresponds to the on/off states in electrical systems.

Definition: Binary is a base-2 number system, while denary (decimal) is a base-10 system.

Binary to Decimal Conversion The document provides a step-by-step example of converting binary to decimal:

Example: Converting 10110110 to decimal

  1. Create a table with place values (128, 64, 32, 16, 8, 4, 2, 1)
  2. Add the values where there's a 1 in the binary number
  3. Result: 128 + 32 + 16 + 4 + 2 = 182

Decimal to Binary Conversion A reverse process is explained for converting decimal to binary:

Example: Converting 145 to binary

  1. Create a binary table
  2. Add 1s from left to right to reach the decimal number
  3. Result: 10010001

CPU (Central Processing Unit) The CPU is described as the brain of a computer system, processing data and executing instructions.

Vocabulary: Input devices (e.g., mouse, keyboard) enter data into a computer, while output devices (e.g., monitor, printer) display or output data.

What is a Computer? The document emphasizes that computers are programmable machines found in various everyday devices, not just PCs and laptops.

Highlight: A computer is an electronic device that takes in data/commands, processes it, and outputs the result.

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very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

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Elisha

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This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user