In this lesson, we will explore the prefixes used for measuring size, such as 'kilo-', 'mega-', 'giga-', and 'tera-'. We will revisit digital computing devices using binary digits to represent all information (including programs).
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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?
Correct answer: 1 byte
1 byte
2 bytes
3 bytes
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?
25 characters
50 characters
Correct answer: 60 characters
60 characters
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.
248 bits
Correct answer: 480 bits
480 bits
600 bits
Q4.
How many bytes are required for representing the entire image?
59 bytes
Correct answer: 60 bytes
60 bytes
62 bytes
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?
Correct answer: 4,000 pictures
4,000 pictures
4,200 pictures
6,000 pictures
Lesson appears in
UnitComputing / Representations: from clay to silicon
