CIS 1200 Chapter Notes - Chapter 8: Base Transceiver Station, Digital Signal Processor, Video Editing Software

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1. Chapter 8: Digital devices and media: Managing a
digital lifestyle
Digital convergence: the use of a single unifying device to handle media, Internet,
entertainment, and telephony needs
1. The evolution of smartphones
Mobile computing devices: a generic term describing one’s ability to use technology
while moving
2. Opposed to portable computers because you can only use them in a
stationary configuration
3. Types of devices
1. Cell phones
2. Personal digital assistants (PDAs)
3. Portable media players (PMPs)
4. Smartphones
5. Flash memory
6. Tablet PCs
7. Notebook computers
8. Netbook
Cellphones
4. Features traditional phone services such as call waiting and voice mail,
calendars, contacts, texting, e-mail, as well as photo/video function
5. How sound travels with a cell phone:
1. Speak into a cell phone
2. Sound enters the microphone as a sound wave
3. Analog-to-digital converter chip converts sound waves into digital signals
4. Digital data is compressed into the smallest possible space by the digital
signal processor so it will transmit quickly
5. Digital data is transmitted as a radio wave through the cellular network to
the destination phone
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6. The process reverses when receiving an incoming call
Personal digital assistants (PDAs)
6. A small device that allows you to carry digital information
7. AKA palm computers or handhelds
8. Small but can hold a shit ton of information
9. Can be synched with your home computer
10. Features touch-sensitive screens that allow you to enter data with a stylus
11. PDAs have a special notation system that is popularly used: Graffiti text
system
12. Functionality is based on benchmarking and operating time on one charge
13. Most PDAs contain internal hard drives
14. Modern PDAs use RAM for running applications; otherwise user data is
stored in flash ROM
15. You can transfer data from your PDA to your desktop using a cradle or
sync cable
16. Many PDAs have an IrDA port that transmits data signals using infrared
light waves
17. Bluetooth is also an option
Portable media players (PMPs)
18. Small portable devices that enable playing of MP3 files
19. Inexpensive PMPs use built-in flash memory to store files (nonvolatile)
20. Some allow you to add storage by buying flash memory cards
21. Some use hard disks so you can store a lot more music
22. Flash memory cards are noiseless, very light, use very little power, and
slide into a special slot in the player
1. Can be erased and rewritten
Smartphones
23. Cellular phone + PDA + PMP
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24. Telephony: the use of equipment to provide voice communications over a
distance
25. Internet Access
26. Personal information management (PIM) feature
27. Voice recording features
28. The ability to play and organize music files
29. GPS services
30. Digital image and video capture
31. Computing power to run programs like word processors or even video-
editing software
32. Feature phones refer to phones that are less powerful that a smartphone
1. Often without touchscreen, inexpensive, simpler interfaces, modest
processors
33. All smartphones have the same components
1. Processor (CPU)
2. Memory
3. Input and output devices
4. OS
34. Smartphones ARE computers
35. The smartphone’s OS is stored on ROM
36. Cell phone technology
1. Connected “cells” makes up a cellular network
2. Base transceiver station: large communication towers with antennae,
amplifiers, receivers, and transmitters
1. Each cell is a geographic area centered on a base transceiver station
3. Outgoing call  Base station picks up request  Station passes request to
central location called a mobile switching center
4. Incoming calls are reverse
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