Year 9 Assessment Homework
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Questions and Answers

What is an algorithm?

  • A programming language.
  • A set of step-by-step instructions to resolve a problem. (correct)
  • A method for debugging code.
  • Patterns and trends used to solve a problem.

Which of the following accurately describes the use of algorithms?

  • To plan out the solution to a problem. (correct)
  • To visualize a code structure.
  • As a platform to program a solution.
  • To test a solution to a problem.

What does the AND logic gate output?

  • True if both inputs are false.
  • True if both inputs are true. (correct)
  • True only if the first input is true.
  • True if at least one input is true.

What is binary?

<p>A sequence of 1s and 0s. (A)</p> Signup and view all the answers

Which is the correct syntax to create a variable named age and assign the value 30 in Python?

<p>age = 30 (B)</p> Signup and view all the answers

Which symbol is used in Python to check if two values are equal?

<p>== (B)</p> Signup and view all the answers

How many inputs can the OR gate take to return a true output?

<p>Only one input must be true. (C)</p> Signup and view all the answers

What is the purpose of creating a Truth Table?

<p>To evaluate logic gate outcomes based on input combinations. (D)</p> Signup and view all the answers

What is the primary purpose of an algorithm?

<p>To plan out the solution to a problem (C)</p> Signup and view all the answers

The output of the NOT gate is true when the input is true.

<p>False (B)</p> Signup and view all the answers

Name the three basic logic gates.

<p>AND, OR, NOT</p> Signup and view all the answers

In binary, the number ___ represents the decimal value 15.

<p>00001111</p> Signup and view all the answers

Match the following Flowol symbol shapes to their descriptions:

<p>Circle = Start or End Diamond = Decision Rectangle = Process Arrow = Flow line Parallelogram = Input/Output</p> Signup and view all the answers

Which of the following statements is true about binary?

<p>It is a sequence of 1s and 0s. (D)</p> Signup and view all the answers

In Python, you create a variable using the syntax 'int variable = value'.

<p>False (B)</p> Signup and view all the answers

What does the OR gate output if at least one input is true?

<p>true</p> Signup and view all the answers

Flashcards

Algorithm

A set of step-by-step instructions to solve a problem.

AND gate

Output is true only if both inputs are true.

OR gate

Output is true if at least one input is true.

NOT gate

Reverses the input (true becomes false, false becomes true).

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Binary

Number system using 1s and 0s.

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Python variable assignment

Used to store data in a program (e.g., age = 30).

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Equality operator (Python)

Checks if two values are equal (==).

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Flowchart Oval

Represents the start or end of a process.

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Flowchart Parallelogram

Represents input or output operations.

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Flowchart Rectangle

Represents a process or action.

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Flowchart Diamond

Represents a decision or logic point.

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Truth Table

Table showing all input combinations and outputs for logic gates.

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Binary to Denary Conversion

Converting binary numbers to decimal numbers.

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Study Notes

Section 1: Spaced Learning

  • An algorithm is a set of step-by-step instructions designed to solve a problem.
  • Algorithms are commonly used to plan out solutions to problems efficiently.
  • Logic Gates:
    • AND Gate: The output is true only if both inputs are true.
    • OR Gate: The output is true if at least one input is true.
    • NOT Gate: Reverses the input; if the input is true, the output is false, and vice versa.
  • Binary is a numeral system that uses a sequence of 1s and 0s to represent data, fundamental to computer communication.
  • To create a variable named age and assign the value of 30 in Python, the correct syntax is age = 30.
  • In Python, the equality comparison operator to check if two values are equal is ==.

Section 2: Written Practice

  • Flowol Symbols: Common shapes include:
    • Oval: Start/End
    • Parallelogram: Input/Output
    • Rectangle: Process
    • Diamond: Decision/Logic
  • A Truth Table outlines all possible input combinations for logic gates and their corresponding outputs.
  • Binary to Denary Conversion: To convert binary numbers (e.g., 00001111) to denary, each binary digit represents a power of 2, counting from the right (0, 1, 2, etc.). For instance, 00001111 in binary is equal to 15 in denary.

Section 1: Spaced Learning

  • An algorithm is a set of step-by-step instructions designed to solve a problem.
  • Algorithms are commonly used to plan out solutions to problems efficiently.
  • Logic Gates:
    • AND Gate: The output is true only if both inputs are true.
    • OR Gate: The output is true if at least one input is true.
    • NOT Gate: Reverses the input; if the input is true, the output is false, and vice versa.
  • Binary is a numeral system that uses a sequence of 1s and 0s to represent data, fundamental to computer communication.
  • To create a variable named age and assign the value of 30 in Python, the correct syntax is age = 30.
  • In Python, the equality comparison operator to check if two values are equal is ==.

Section 2: Written Practice

  • Flowol Symbols: Common shapes include:
    • Oval: Start/End
    • Parallelogram: Input/Output
    • Rectangle: Process
    • Diamond: Decision/Logic
  • A Truth Table outlines all possible input combinations for logic gates and their corresponding outputs.
  • Binary to Denary Conversion: To convert binary numbers (e.g., 00001111) to denary, each binary digit represents a power of 2, counting from the right (0, 1, 2, etc.). For instance, 00001111 in binary is equal to 15 in denary.

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Description

This quiz covers fundamental concepts of algorithms, logic gates, and binary systems. Explore key definitions and the application of Python syntax for variable assignment and comparisons. Test your understanding of flowchart symbols and truth tables.

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