Computing

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Large Quantities

This lesson familiarises learners with bytes and the prefixes used for measuring representation size, such as ‘kilo-’, ‘mega-’, ‘giga-’, and ‘tera-’. Simple activities embed these concepts in real-life settings and introduce learners to conversions between the different units and multiples. Learners are remined that digital computing devices use binary digits to represent all information (including programs).

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Large Quantities

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.In the ASCII Art shown below, every character is represented by a sequence of 8 bits. How many bytes are required for one individual character in the image?

1/5

Q2.In this ASCII image, there are 3 lines, with 20 characters in each line.This includes spaces and the special characters that move to the next line. How many characters are in the image in total?

2/5

Q3.How many bits are required for representing the entire image? Hint: each character is a byte and there are sixty characters in the ASCII image.

3/5

Q4.How many bytes are required for representing the entire image?

4/5

Q5.You really enjoy taking pictures with your mobile phone. You purchase a 16GB memory card and you want to know how many pictures you can store on the memory card. The size of each individual picture is approximately 4MB. How many pictures can be stored on your memory card?

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Large Quantities

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.In the ASCII Art shown below, every character is represented by a sequence of 8 bits. How many bytes are required for one individual character in the image?

1/5

Q2.In this ASCII image, there are 3 lines, with 20 characters in each line.This includes spaces and the special characters that move to the next line. How many characters are in the image in total?

2/5

Q3.How many bits are required for representing the entire image? Hint: each character is a byte and there are sixty characters in the ASCII image.

3/5

Q4.How many bytes are required for representing the entire image?

4/5

Q5.You really enjoy taking pictures with your mobile phone. You purchase a 16GB memory card and you want to know how many pictures you can store on the memory card. The size of each individual picture is approximately 4MB. How many pictures can be stored on your memory card?

5/5

Lesson summary: Large Quantities

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