This document lists and categorizes various computer peripherals. It discusses input peripherals like keyboards and mice, how they work by detecting key presses and sending the input to the computer. Output peripherals mentioned include screens, printers, and their characteristics. Input/output peripherals that both accept and store data are also listed, such as hard drives, memory sticks, CD/DVD drives, and connection devices like modems and network cards. The document concludes by grouping the peripherals into input, output, and input/output categories.

1. Peripherals
Miguel Sáenz de Santa María
Technology Department
IES El Batán

2. Devices
Keyboard
Mouse
Stick Memory
Printer
Screen
WebCam
Microphone
Modem
LAN Card
Wireless
Bluetooth
USB
Firewire
Parallel Port
Serial Port
Scanner
Camera
WiFi
Floppy
DVD
CD-Rom
MP3 Player
MP4 Player
PS2
Card Reader

3. Peripherals
Keyboard
Mouse
Stick Memory
Printer
Screen
WebCam
Microphone
Modem
LAN Card
Wireless
Bluetooth
USB
Firewire
Parallel Port
Serial Port
Scanner
Camera
WiFi
Floppy
DVD
CD-Rom
MP3 Player
MP4 Player
PS2
Ports
Card Reader

4. Peripherals
Keyboard
Mouse
Stick Memory
PrinterScreen
WebCam
Microphone
Modem
Scanner
Camera
Floppy
DVD
CD-Rom
MP4 Player
CD-Recorder
DVD-Recorder

5. Peripherals
Keyboard
Mouse
Stick Memory
Printer
ScreenWebCam
Microphone
Modem
Scanner
Camera
Floppy
DVD
CD-Rom
MP3 Player
MP4 Player
CD-Recorder
DVD-Recorder
Input Output Input/Output
Monitor
Speaker
Graphic Tablet
Screen Touch

6. Input Peripherals

7. How do input peripherals
work?
When a user press a key, one electric switch
is closed.
A chip detects that event and save it in a
buffer.
When it's possible, the information goes out
the buffer to be encoded in zeros and ones,
code which is sent to the computer through
the input port.
Processor receives the data and processes
it as the application or operating system may
decide.
User
presses
a key
Buffer
Encoding
PS/2
Processor (CPU)
d
01100010
R3-C4
Keyboard

8. Output Peripherals

9. Output Peripherals
Characteristics

The screen size is measured ever in
INCHES.

Resolution is expressed as a product
of pixels: 800 x 600, 1024 x 768, etc.

Printers are characterized by their
speed (in pages per minute, ppm) and
their resolution (in dots per inch, dpi)

10. Input/Output Peripherals

11. Input/Output Peripherals
Connection
Interactive
Storing
Hard Disk
CD-Recordable Modem
Ethernet Card
WiFi USB Stick
Interactive Gloves
Virtual Reality Helmet
Screen Touch
Memory Stick
DVD-Recordable
Bluetooth

12. Conclusion

Peripherals are devices
which can be connected to
the computer.

They allow the introduction
and exit of data.

We can sort them as:
Input Peripherals,
Output Peripherals, and
Input/Output Peripherals

Keyboard and Mouse are the
most important Input
Peripherals. Cameras, Webcams
and Scanners are Input
Peripherals too.

Monitor and Printer are main
Output Peripherals.

Hard Disk drives, Memory
Sticks, Re-writeable Disks, and
external connections (Ethernet,
Modem) are Input/Output
Peripherals.