Data Forms

Lesson 2 – Term 2 2011

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Today:1. Reminder of class rules

2. Data Forms

Classroom Rules 10IST H3

That we will take PRIDE in all we doWhich means we:• Participate: complete all activities.• Respect: show everyone respect.• Excellence: do everything to the best of our ability.

• We can listen to music with our headphones and as long as we are not having a class discussion

• We will have free time at the end of the lesson provided we have worked well

• Every lesson a blue merit will be handed out

Classroom Rules 10IST F1

That we will take PRIDE in all we doWhich means we:• Participate: complete all activities.• Respect: show everyone respect.• Excellence: do everything to the best of our ability.

• We will work collaborative with each other• We will help each other out• We will effectively communicate with each other

Data forms – Analogue Data

• Think of a clock • Smooth rotation of hands ->

represents a wave• Analogue data is represented

by a continuous wave• What are some examples of

analogue data?

Data forms – Analogue Data

Examples:

Where are these found? In the natural world.

Data forms – Analogue to Digital

• This process is known as digitising• For example voice recording • What are the benefits of the digital form?• Describe what is digitising. Explain how it works. (Give at least 1 example)• Class activity -> have a go at digitising (OCR)

Data forms – Analogue to Digital: OCR

• What does OCR stand for?• Less have a go

• Upload the document to http://www.onlineocr.net/ • Click UPLOAD• Click RECOGNISE• Wait for your image to be converted to text• Copy and paste your converted text in the box below

• Discuss on the wiki when you think you could use OCR.

• http://10ist2011.wikispaces.com

Data forms – Digital to analogue

• Why?• So we can interact with the data in the physical world

• Sound -> speakers• Video -> analogue monitors

• So other analogue devices can interact with digital devices• For instance, a modem• Outline a basic diagram that explains how a modem

works. Use a graphics software program.

Today

• Complete questions 1-6 on data forms• Ensure you have completed the whole worksheet• Your worksheet must be submitted to the

dropbox folder on Thursday 5/5/2011 (10IST H3) or Friday 6/5/2011 (10IST F1) by the START of the lesson.