1 / 18

Chapter 3

Peter Norton’s  Introduction to Computers. Chapter 3. Interacting with Your Computer. Learning Objectives:. List at least three common input and output devices. Name the processes a video monitor uses to displays images.

hovan
Download Presentation

Chapter 3

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Peter Norton’sIntroduction to Computers Chapter 3 Interacting with Your Computer

  2. Learning Objectives: • List at least three common input and output devices. • Name the processes a video monitor uses to displays images. • Name the components of a mouse and list the common techniques used to maintain a mouse. • Name three types of printers and list the advantages and disadvantages of each. • Explain how input and output devices communicate with the other parts of the computer.

  3. Keyboard Mouse Trackball Trackpad Pen Touch Screen Bar Code Reader Image Scanner Microphone Video Input Devices:

  4. Right click When it gets sluggish, turn it over and remove the cover plate. Left click Carefully clean the ball and rollers. The mouse is a fairly intuitive input device.

  5. Parts of a Keyboard: • Alphanumeric Keys • Modifier Keys • Numeric Keypad • Function Keys • Cursor-movement Keys • Escape Key • Special-purpose Keys

  6. Factors Affecting Monitors: • Size • Resolution • Refresh rate • Dot pitch

  7. Size is measured diagonally. 1 pixel in a color monitor The picture is scanned from left to right and from top to bottom. One complete set of scan lines is called a frame. Refresh rate = number of frames in one second Resolution = no. of pixels (i.e. 1024 x 768)

  8. (Notebooks use LCD displays) Flat-Panel Monitors: • LCD(Liquid Crystal Display) • Passive Matrix • Active Matrix

  9. Ink Jet Laser Dot-Matrix Thermal-Wax Dye-Sub Fiery IRIS Plotter Types of Printers:

  10. Ink jets are popular because of their relatively low cost and color capability.

  11. Heat roller bonds toner to paper Toner transferred from drum to paper Rotating mirror Laser beam Laser transfers image to drum Paper is given a static charge Laser printers are faster and capable of high resolution.

  12. Printer Criteria: • Image Quality • Speed • Initial Cost • Cost of Operation

  13. Types of Interfaces: • Serial • Parallel • Centronics • SCSI

  14. UART Receiver RS232 Driver Start bit Stop Bit Bit 6 Bit 3 Bit 4 Bit 1 Bit 2 Bit 0 Bit 7 Bit 5 To modem Transmitter Serial data transmission is relatively slow! Control The serial ports transfer data one bit at a time.

  15. PIA Receiver Drivers To printer Transmitter Control The parallel port transfers data one byte at a time.

  16. A SCSI card can be plugged into an expansion slot. SCSI devices can be daisychained.

  17. Learning Objectives:Chapter 3 Review • List at least three common input and output devices. • Name the processes a video monitor uses to displays images. • Name the components of a mouse and list the common techniques used to maintain a mouse. • Name three types of printers and list the advantages and disadvantages of each. • Explain how input and output devices communicate with the other parts of the computer.

More Related