Introduction to Computers. Parts Monitor CRTCathode Ray Tube Flat Panel Dual Screen.
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Transcript of Introduction to Computers. Parts Monitor CRTCathode Ray Tube Flat Panel Dual Screen.
Introduction to Computers
Parts
Monitor• CRT Cathode Ray
Tube
• Flat Panel
• Dual Screen
Graphics Array• These are drivers for hardware. Sometimes old
software has to have old drivers.• CGA 16 320 x 200• EGA 64 480 x 320• VGA 256 640 x 480(early 90s)
Show full video, but frames “jumped”. • S-VGA Millions 800 x 600
Animation as smooth as a TV• XGA Millions
•MonitorSize
• 9” 14”, 15”, 17”, 21 The most common size today is 15”.Monochrome (one color) display
Keyboards• Standard Keyboard –
• Enhanced Keyboard-
• Ergonomic Keyboard-
• Virtual Keyboard-
NEXT SLIDE
Standard Keyboard
NEXT SLIDE
Does not have the locator or the keypad sectionsDoes not have the locator or the keypad sections
Enhanced Keyboard
NEXT SLIDE
–Most common todayMost common todayFunction or F-keys are located at the topFunction or F-keys are located at the topNumeric keypad is located at the extreme rightNumeric keypad is located at the extreme right
Locator keys are located between the keypad and regular keyboardLocator keys are located between the keypad and regular keyboard
Ergonomic Keyboard
NEXT SLIDE
Virtual Keyboard
NEXT SLIDE
Pointing Devices
• Mouse
• Trackball
• Touchpad
• Joystick
• Digitizer and Pad
• Touch Sensitive Screen
Mouse
Trackball
Touchpad
Joystick
Digitizer and Pad
Touch Sensitive Screen
Data Storage• 3.5 Micro Floppy – 1.4 MB• 5.25 Floppy – 720 KB• Hard disk drive - TB• CD-ROM – 800 MB• DVD-ROM - 4.7 GB• USB Storage - GBs• Tape Drive - GBs• Jaz and Zip – 1 GB/100 MB
3.5 Micro Floppy
5.25 Floppy
Hard disk drive
Internal External
CD-ROM
DVD-ROM
USB (Jump) Drives
Tape Drives
Jaz and Zip Drives
Modem
• Modulation/Demodulation
• How modems work
Printers
• Dot Matrix Printer
• Ink Jet Printer
• Laser Printer
• Plotter
• Dye Sublimination
Inkjet DMP Laser
Cost
Quality
Color
Maintenance
Dot Matrix• Cost: $40• Quality: Low• DPI: 300 dpi• Color: Possible, requires extra head• Maintenance Needs: Cheap
Ink Jet
• Cost: $40
• Quality: Medium
• DPI: 600
• Color: Yes
• Maintenance Needs: Expensive
Laser
• Cost: $500
• Quality: High
• DPI: 1200
• Color: Yes
• Maintenance Needs: Low, 3 cents copy
Plotter
Used in drafting for mechanical and architectural needs
Dye Sublimination• Student ID Cards
• Mugs
• License Plates
• Ceramic Tile