2a. Describe one advantage of using QR codes rather than traditional bar codes. Explain how QR codes provide the advantage you have described.

2b. A square QR code contains 40 x 40 tiny squares (pixels) where each tiny square represents a 0 or a 1. Calculate how many bytes of data can be stored on the QR code.

2c. Describe the purpose of the three large squares at the corners of the QR code.

2d. Describe one disadvantage of using QR codes.

Question

29-07-2024
Computers and Technology

Answered

2a. Describe one advantage of using QR codes rather than traditional bar codes. Explain how QR codes provide the advantage you have described.

2b. A square QR code contains 40 x 40 tiny squares (pixels) where each tiny square represents a 0 or a 1. Calculate how many bytes of data can be stored on the QR code.

2c. Describe the purpose of the three large squares at the corners of the QR code.

2d. Describe one disadvantage of using QR codes.

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-07-29T06:44:35-04:00

Final answer:

QR codes offer advantages in data capacity compared to barcodes. The function of barcodes limits the amount of information they can store. The purpose of the three large squares in a QR code is for positioning. However, a disadvantage of QR codes is the requirement for specific scanning technology.

Explanation:

One advantage of using QR codes over traditional barcodes is their ability to store more data in a smaller space. For example, a QR code can contain up to 3KB of data, while a barcode typically holds around 20-25 characters.

Barcodes bring this advantage by representing data through a series of parallel lines of varying widths, which limits the amount of information they can store due to their linear nature.

The three large squares at the corners of a QR code serve as positioning markers that help a scanning device locate and orient the code correctly to ensure accurate data retrieval.

One disadvantage of using QR codes is that they require a smartphone or a specialized scanner to read, which may not be universally available to all users.

Learn more about QR codes here:

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