Homework due on March 22, 2007

The questions did not load up last week, so I will repost them now. Please read pages 92-93 and answer the following questions:

1 a) Explain what is meant by the term video conferencing. (2 pts)
1 b) Give one example of how video conferencing can be used in business. (2 pts)
2 Describe one way in which ICT enables people to work collaboratively. (3 pts)

Good luck!

Homework due on Friday March 9, 2007

Tomorrow we are going to review email and it's structure. To prepare for this please read pages 90-91 and answer the following questions:

1. What is "fax" a short form of? (1 pt)
2. How does a fax work? (4 pts)
3. What are 2 drawbacks of faxing? (2 pts)
4. What are 3 advantages of email? (3 pts)
5. What is a WAP phone? (1 pt)

Good luck!

Homework due on March 8, 2007

For our final discussion on data logging systems, please read pages 140-141 and answer the following questions:

1. Often what type of systems are visual data logging systems? Where are these systems often located? (2 pts)
2. Give two examples of the use of visual data logging. (2 pts)
3. You own a nursery garden in which you have several large greenhouses. Explain how you would ensure that the environment in each greenhouse is right for the plants being grown. (4 pts)
4. What does feedback mean? Give a practical example. (2 pts)

After this we only need to cover pages 90-95, and pages 156-160 (already covered somewhat). As well we need to discuss how pages 184-206 can help you study and then fill in the blanks with some information not found in the book to finish the syllabus outline!

Good luck!

Homework due on March 2, 2007

Now that the February exam is over we are ready to begin our final push to the IGCSE exams. We are going to balance filling in the holes of information we have yet to learn off the syllabus with review of what we have learned. To start, please read pages 136-139 and answer the following questions:

Pg 136-137

1. What are the disadvantages of logging data manually compared with automatic data logging? (3 pts)
2. What is meant by remote sensing? (3 pts)
3. Explain how electronic temperature sensors work. (5 pts)
4. Explain why the electrical signal from a humidity sensor cannot be fed straight into a computer. (5-6 pts)

Pg 138-139

1. When analysing data logging systems you need to make several important decisions. Name 3 decisions that need to be made. (3 pts)
2. What are the choice of sensors you have? (3 pts)
3. Why is it important to calibrate sensors? (3 pts)
4. Can a calibrated sensor be used with any interface? Why or why not? (3 pts)