QR Challenge: Computer Science Revision Quiz

Created using the ClassTools QR Treasure Hunt Generator

Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

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B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

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C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

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Questions / Answers (teacher reference)

Question	Answer
1. What is the maximum number of addressable cells for an address bus with 293 address lines?	1.59
2. What architecture uses a shared memory bus for both data and instructions/	Von Neumann
3. What are the 3 operators the control unit repeats?	Fetch,Decode,Execute
4. What is the definition of Bandwidth?	Bandwidth is the range of frequencies that a transmission medium can carry.
5. What is the difference between Synchronous and Asynchronous transmission?	In synchronous transmission data is transferred at regular intervals. Asynchronous transmission does not.
6. What is the difference between baud rate and bit rate?	Baud Rate is the speed at which data can be transmitted whereas bit rate the speed at which a particular transmission is taking place.
7. What is latency?	The time delay between the moment of transmission and when the transmission is received at its destination.
8. What is the maximum distance that a parallel data cable can transmit data accurately?	2 Metres
9. 57 68 61 74 20 6c 61 6e 67 75 61 67 65 20 69 73 20 62 61 73 65 20 32 3f	Binary
10. 01010111 01101000 01100001 01110100 00100000 01100010 01100001 01110011 01100101 00100000 01101001 01110011 00100000 01001000 01100101 01111000 01100001 01100100 01100101 01100011 01101001 01101101 01100001 01101100 00111111	Base 16

 

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