Wearable technology in Intro to Computing - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is wearable technology?

Wearable technology refers to electronic devices that you can wear on your body. These devices often track information or help you with tasks, like smartwatches or fitness bands.

beginner

Name three common examples of wearable technology.

Common examples include smartwatches, fitness trackers, and smart glasses.

intermediate

How does a fitness tracker work?

A fitness tracker uses sensors to monitor your movements, heart rate, and sometimes sleep patterns. It collects this data and shows it on a screen or app to help you stay healthy.

beginner

What are two benefits of wearable technology?

Wearable technology helps people monitor their health easily and stay connected without needing to use their phone all the time.

intermediate

What is a potential privacy concern with wearable technology?

Wearable devices collect personal data, like location and health info, which could be misused if not protected properly.

Which of these is NOT an example of wearable technology?

A Fitness tracker

B Laptop

C Smartwatch

D Smart glasses

A laptop is not worn on the body, so it is not considered wearable technology.

What kind of data do fitness trackers usually collect?

A Emails and messages

B Video games

C Weather forecasts

D Heart rate and steps

Fitness trackers collect health-related data like heart rate and steps to help monitor fitness.

Why is privacy important in wearable technology?

A Because personal data can be shared without permission

B Because devices need charging

C Because devices can be lost easily

D Because devices are expensive

Wearable devices collect personal data that must be protected to prevent misuse.

Which feature is common in smartwatches?

A Making phone calls

B Cooking food

C Printing documents

D Washing clothes

Smartwatches can make phone calls and show notifications, helping users stay connected.

How do wearable devices usually connect to other devices?

A Satellite signals

B USB cables only

C Bluetooth or Wi-Fi

D Infrared remote

Wearables commonly use Bluetooth or Wi-Fi to connect wirelessly to phones or computers.

Explain what wearable technology is and give two examples.

Think about devices you can wear that help with health or communication.

Describe one benefit and one privacy concern related to wearable technology.

Consider how wearables help users and what risks come with collecting personal data.

Practice

1. What is wearable technology primarily used for?

easy

A. Large desktop computers used for gaming

B. Small computers worn on the body to help with tasks and health tracking

C. Software programs installed on smartphones

D. Traditional wristwatches that only tell time

Solution

1. Step 1: Understand the definition of wearable technology

   Wearable technology refers to small computers worn on the body.

2. Step 2: Identify the main uses

   They help track health, show notifications, and make tasks easier.

3. Final Answer:

   Small computers worn on the body to help with tasks and health tracking -> Option B

4. Quick Check:

   Wearable technology = Small body-worn computers [OK]

Hint: Wearables are small computers worn on the body [OK]

Common Mistakes:

• Confusing wearable tech with large desktop computers
• Thinking wearable tech is just software
• Assuming all watches are wearable tech

2. Which of the following is the correct example of wearable technology?

easy

A. Tablet

B. Desktop computer

C. Smartwatch

D. Printer

Solution

1. Step 1: Recall examples of wearable technology

   Wearable technology includes devices like smartwatches, fitness bands, and smart glasses.

2. Step 2: Match options to wearable devices

   Only the smartwatch is worn on the body and fits the wearable tech definition.

3. Final Answer:

   Smartwatch -> Option C

4. Quick Check:

   Wearable example = Smartwatch [OK]

Hint: Wearables are devices worn on the body like smartwatches [OK]

Common Mistakes:

• Choosing devices not worn on the body
• Confusing tablets or printers as wearable
• Ignoring the 'worn on body' part

3. Consider this simple flowchart for a fitness band: Start -> Measure Heart Rate -> Is Heart Rate > 100? -> Yes -> Alert User -> End What is the output if the heart rate measured is 85?

medium

A. No alert, process ends

B. Error message

C. Alert User

D. Measure Heart Rate again

Solution

1. Step 1: Follow the flowchart steps with heart rate 85

   The heart rate is measured as 85, which is not greater than 100.

2. Step 2: Check condition and output

   Since 85 <= 100, the 'Yes' branch is not taken, so no alert is sent and the process ends.

3. Final Answer:

   No alert, process ends -> Option A

4. Quick Check:

   Heart rate 85 ≤ 100 -> No alert [OK]

Hint: If heart rate ≤ 100, no alert is triggered [OK]

Common Mistakes:

• Assuming alert triggers for all heart rates
• Confusing the condition > 100
• Thinking process repeats automatically

4. A smartwatch program is supposed to display a notification when steps exceed 10,000. The code snippet is:

if steps > 10000
  display('Goal reached!')

What is the error in this code?

medium

A. Incorrect comparison operator

B. Steps variable is not defined

C. Wrong function name for display

D. Missing colon after if condition

Solution

1. Step 1: Check Python syntax for if statements

   Python requires a colon ':' at the end of the if condition line.

2. Step 2: Identify missing colon in the code

   The code has 'if steps > 10000' without a colon, causing a syntax error.

3. Final Answer:

   Missing colon after if condition -> Option D

4. Quick Check:

   Python if needs ':' after condition [OK]

Hint: Always put ':' after if conditions in Python [OK]

Common Mistakes:

• Forgetting the colon after if
• Assuming display() is invalid without checking
• Thinking comparison operator is wrong

5. A fitness band tracks steps and heart rate. It should alert the user if steps are below 5000 and heart rate is above 120. Which logic correctly implements this in Python? A) if steps < 5000 and heart_rate > 120: alert('Check your health!') B) if steps > 5000 or heart_rate < 120: alert('Check your health!') C) if steps < 5000 or heart_rate > 120: alert('Check your health!') D) if steps > 5000 and heart_rate < 120: alert('Check your health!')

hard

A. Alert if steps below 5000 AND heart rate above 120

B. Alert if steps above 5000 OR heart rate below 120

C. Alert if steps below 5000 OR heart rate above 120

D. Alert if steps above 5000 AND heart rate below 120

Solution

1. Step 1: Understand the alert condition

   The alert triggers only when both steps are below 5000 AND heart rate is above 120.

2. Step 2: Match the condition with Python logic

   Alert if steps below 5000 AND heart rate above 120 uses 'and' with steps < 5000 and heart_rate > 120, which matches the requirement exactly.

3. Final Answer:

   Alert if steps below 5000 AND heart rate above 120 -> Option A

4. Quick Check:

   Both conditions must be true -> use 'and' [OK]

Hint: Use 'and' to require both conditions true [OK]

Common Mistakes:

• Using 'or' instead of 'and' for both conditions
• Reversing comparison operators
• Confusing steps and heart rate conditions