Input and Output: Meaning and Examples

📚 Quick Study Guide

• ⌨️ Input: Data or instructions provided to a computer system.
• 🖱️ Input Devices: Devices used to provide input, e.g., keyboard, mouse, scanner.
• 📤 Output: The result of processing input data; the information a computer provides to the user.
• 🖥️ Output Devices: Devices used to display or output information, e.g., monitor, printer, speakers.
• 🔄 I/O Relationship: Input leads to processing, which then leads to output.
• 🧮 Example: Inputting numbers into a calculator ($2 + 2$) results in the output ($4$).
• 💾 Data Types: Input and output can involve various data types such as text, numbers, images, and sound.

🧪 Practice Quiz

1. Which of the following is primarily an input device?
   1. A. Monitor
   2. B. Printer
   3. C. Keyboard
   4. D. Speaker
2. What is the primary function of output in a computer system?
   1. A. To provide data to the system
   2. B. To display results to the user
   3. C. To store information
   4. D. To process calculations
3. Which of these is an example of output?
   1. A. Typing on a keyboard
   2. B. Scanning a document
   3. C. A song playing through speakers
   4. D. Clicking a mouse
4. In a program that calculates the area of a rectangle, what would be the input?
   1. A. The calculated area
   2. B. The length and width of the rectangle
   3. C. The program's code
   4. D. The computer's operating system
5. What device is used for both input and output?
   1. A. Printer
   2. B. Monitor
   3. C. Touchscreen
   4. D. Keyboard
6. What type of data can be considered as input?
   1. A. Only numerical data
   2. B. Only text data
   3. C. Text, numbers, images, and sound
   4. D. Only video files
7. If you are using a microphone, what kind of input are you providing?
   1. A. Visual Input
   2. B. Audio Input
   3. C. Text Input
   4. D. Haptic Input