Hardware - Input and Output- Chapter 4

1. Describe 4 pointing devices and how they are used.
2. What does a scanner do?
3. What defines the quality of scanned images?
4. Define the following:
• Barcode
• Barcode reader
• RFID Reader
• Optical Mark Readers
• Optical Character Recognition Devices
• Biometric Reader
• Pixel
5. Explain how the number of pixels used to store the data for a digital camera image determines the quality
6. Explain how speech recognition systems work.
7. Describe how screen resolution and color-depth affect the quality of your screen image.
8. Explain how laser printers work
9. Explain how ink jet printers work