Unit 2, Lesson 6 - learning about peripherals
Peripherals are devices used for computer input and output; mouse, monitor, keyboard, USB, printer, etc.
Keyboards report each key press to a software program that interprets the keystrokes as binary digits. A keyboard also gives commands to computer operating systems.
Most mice use either optical or laser technology, there is also USB wireless optical mice and trackball mice.
Monitors are output devices, such as an LCD or CRT monitor
High-definition monitors have better resolution. A pixel (picture element) is the smallest colored dot that is displayed on the screen, so more pixels means more details. A standard resolution is 1280 x 720 pixels (width by height). High-def monitors have 1920 by 1080 pixels
Printers and scanners add value to systems. Many types of printers: inkjet, thermal, impact, laser
Many different drives: 3 1/2 inch floppy drive, CD-ROM drive, DVD drive, Blu-ray drive
External drives give users more storage options (external hard drive, DVD drive with laser light, USB drive
Tower cases have expansion bays. They usually have at least one bay for an optical drive such as DVD or Blu-ray. Different sizes and types of drives can all be loaded into the same tower case.
Dream computer needs -
keyboard
mouse
monitor
printer
scanner
storage drives
game controllers/joysticks
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