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ICT > personal digital devices > Flashcards

personal digital devices Flashcards

1
Q

how do devices allow people to communicate ( 7 reasons)

A

text message (sms) or multimedia messages
social networks
instant messagesvoice or video calls\
emails

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2
Q

how can people use digital devises for leisure?

A 
taking photos
keeping in touch with friends
ebook readers
playing games\music
watching films or digital tv
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3
Q

what does GPS stand for

A

globl positioning system

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4
Q

what does a GPS do?

A

tracks the location of cras and vans using geotag images. it can create routes on a satnav

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5
Q

what o product designer think about wich a new device?

A

who will be buying it and how thye will use it

audience and purpose

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6
Q

gave examples of aduience and purpose for a teenager and a business man

A

teenager- wants internet for social merdia where as a business man wants a qwerty keyboard to sedn emails easily

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7
Q

when choosing a digital device what do you need to think about?

A

user requirements and what they want versus what they need

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8
Q

what factors need to be considered when buying a device?

A

interface compatibilty
connectivity and speed storage
security reliability
battery life
cost
purpose

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9
Q

define processor

A

it controlls all the functions of a device. some different devices have specialist microprocessors

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10
Q

define bytes kilobytes megabytes gigabytes and terabytes

A

info on computer drive and revison guide

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11
Q

how can digital devices add to their internal memory?

A

computers ca add high capacity hard disk drives to store terabytes of data

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12
Q

what is flash memory?

A

a type of peripheral ideal for digital devices as it wont lose data when turned off and has no moving parts to be damadged.
it is also removable so data can be transfered

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13
Q

mane 5 types of flash memory

A 
Sd card 
Micro Sd card
SDXC card
USB
SDHC card
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14
Q

whats a Sd card

A

a Secure digital crad

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15
Q

whats a SDXC card

A

and extended capacity secure digital card

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16
Q

what does USB stand for?

A

Universal serial bus or memory stick

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17
Q

what does SDHC stand for ?

A

secure digital high capacity card

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18
Q

whats an input device

A

a form of peripheral

it allows the usser to give instructions andinput data into the device

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19
Q

whatsan output devidce

A

a form of peripheral

it allows the user to hear or see information after it has been processed

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20
Q

give exampes of output peripherals (6)

A 
speakers
docking station
headphones
printer
headset
screen
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21
Q

give examples of input peripherals (6)

A 
mouse
keyboard
webcam
touchscreen
microphone
graphics tblet
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22
Q

what is data cable connection and how does it work?

A

it is the most common form of commection and it is via a USB cable. most mobile phones and media players use it to connect to a computer running the correct software required.

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23
Q

what is bluetooth and how does it work?

A

it alows devices to communicate wirelessly over a short distance using radio waves.
modern devices have a dongel to allow this (computers printer speakers phones)

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24
Q

what does WIFI stand for

A

Wreless fidelity

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25
Q

what is wifi and how does it work

A

it is a form of wireless communication that can be done over larger distances. modern thimgs all have wifi . you can use it to connect toa computer network and the internet. you can als connect wifi enabled peripherals (printer scanners projectors)

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26
Q

what is cloud synchronisation and how does it work?

A

it allows uers to store data files on a remote server and acess it through a digital device. many devices can be linked to one cloud account, ths menas sychronysing does not have to take place to get the files of all the devices

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27
Q

what are the core fuctions of a mobile phone

A

make calls on the move and send short SMS text messages

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28
Q

what are the added functions of a phone

A

mulitfuctional phones have taken over the jobs of other devices such as media players, games consoles and laptops. this is convergence

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29
Q

define convergence

A

when one device is developed to cary out fuctions that were orginally performed my several other devices

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30
Q

what can multifuctional devices and phones do? (5/9)

A 
camera/ video
internet browsing
GPS/ navigation
entertainment/music/games
data storage
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31
Q

define the term network bands

A

mobile phones in differnt areas of the world use different frequencies or network bands. if you want to cover phones abroad it needs to be a Dual band phone or the whole world needs a Quad band phone

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32
Q

list 5 ways to keep data safe on a mobile phone (security)

A 
hide the phone
set a pin password or biometric lock
lock the sim card
recore the IMEI number
restrict bluetooth nusage(avoid bluejacking)
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33
Q

when choosing a mobile phone what should you consider?

A

who its for (teenager, business, olderperson)
what will they use it for ( entertainment)
what peripherals will they want ( docking station hands free kit)

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34
Q

desktop computers- what do they need

what do they have/why are they good?

A 
need input peripherals(mouse)
have harddisks optical and dvd drives
good conectivity
can have wifi and bluetooth cards fitted
easy to upgrade and enhanse
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35
Q

what is laptop designed for?

A

designed to fit on the lap it carries out the same functions of a desktop computer but is more compact and is to be carried around.

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36
Q

notebook, what is designed for?

A

Very similar to a laptop but is even more compact.

The name comes from its small size and is compared to a notebook

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37
Q

what is netbook designed for? and whats the price?

A

This is similar to the notebook but is mainly for wireless use and emails/ internet/ messaging.
A netbook is usually cheap and a low specification compeered to notebooks and laptops, they have a increased solid state memory.

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38
Q

what is a PDA personal digital assistant

A

A portable device that is small enough to fit in your palm. It usually contains and address book, telephone, internet and note making features. It also allows some data be exchanged to computers

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39
Q

what is a tablet?

A

Is a small computer usually with a touch screen or pen enabled interface.
They are bigger thank smart phones and pda’s
Example- ipad
Wireless potable personal computers

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40
Q

list 3-4 advantages of portable devices.

A

Suited to people on the move.
Can be transformed into a desktop-style computer by attaching an external mouse and keyboard.
Good for people with disabilities to carry around as a communications tool.
They can run off a battery in situations where electricity is unavailable.
You can store files to the hard drive and take the whole device with you, rather than having to copy files to another medium.

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41
Q

list 4-5 disadvantges of portable devices

A

They are more likely to get stolen..
They are prone to damage, e.g. thin screens, easily damaged by spilt drinks
They are not so easy to upgrade, as components are compacted inside
They are likely to run on batteries, which need recharging. More powerful programs use more power, which requires frequent recharging.
compacted into the device.

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42
Q

list 5-6 advantages of desktop computers

A

Big motors double up as TV screens
The keyboard is more comfortable to use, with keys better spaced out.
They are less likely to get stolen.
They are good for parents who want to see what their children are doing on the computer.
They are more likely to have ergonomic (comfortable) devices that can be attached to the computer or used around it.
More powerful.

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43
Q

list 3-4 disadvantges of desktop computers

A

They are big and bulky.
Can have powerful components that use a lot of power
There are lots more cables and wires to deal with.
To transfer files, you have to save them to a medium such as a CD R and move the disk rather than the computer.

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44
Q

what internal features d you have to consider when buying a computer (7)

A 
battery life
number of UBS ports
storage capacity
RAM
processor speed
sound/graphic card
wi-fi
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45
Q

define erognomics

A

the science of designing equiptment so that is it comfortable and user friendly. it can help reduce repettive strain injuries

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46
Q

what is the cause and possible sollution of eye strain?

A

problem: looking at screen too long/ light shining on the screen
sollution: take breaks, adjust screen or use an anitglare one.

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47
Q

what is the cause and possible sollution of RSI repetitive strain injury?

A

problem: perforing repeated action Eg mouse clicking
sollution: use wrist resta to support hands. take breaks or do a differtn action for a short time as break

48
Q

what is the cause and possible sollution of kneck and back problems?

A

problem: sitting badly or in the same position for a long time.
sollution; change chair or screen height. adjust lumbar support. move the computer closer or further away

49
Q

what is the cause and possible sollution of pain in the knees and legs?

A

problem: sitting in the wrong or the same position for a long time.
sollution: adjust chair so feet are flat on ground/ use a foot rest. take regualr breaks to move legs.

50
Q

name seven fuctions of a digital camera.

A 
digital or optical zoom
take photsos/ hd video
 download files onto pc using usb cable
view images on LCD screen quickly.
store files on an SD card
crop/edit files with inbuilt software
view files on tv with USB and HDMI ports
51
Q

define digital zoom

A

just enlarges part of the image which can become blured.

52
Q

define optical zoom.

A

moves the lens closer so light from the object is brought to a focous on the sensor

53
Q

define resolution

A

images are made up of pixles. the more pixles the more detailed the image is, it can also be enlarges better. more pixles= larger file size

54
Q

define pixles

A

a tiny pint in an image. megapixles is one million of them lots of pixels means larger file sizes.

55
Q

why do retailer add new fuctions to multifuctional devices?

A

to make people cary on buying them

56
Q

how does a GPS reciver or tagger work in multifuctional devices (camcorder, phone , camers ect)

A

the goelogical coordinates ca be stored in the metadata. these allow users to see google maps and google earth exactly ere the image was taken

57
Q

define metadata

A

smal text files stored with each image givin git details such as geological coordinates

58
Q

how is wifi used in cameras/camcorders?

A

cameras now have this and bluetooth cableing, this allos users to emails images or upload them online to social networking sites without the need to download picture onto a computer first.

59
Q

what is so good about personal camcorders?

A 
they compete with other devices. 
they are cheap
have a better specification thatn phones.
can recored HD vidoes
some have wifi do directly upload.
60
Q

name the 7 key features of media players

A

small/ light to cary around
use solid state memory-songs dont skip when jolted
long battery life
hold lots of media (podcast audiobooks, video)
can set playlists
can lock to prevent accidnetal activation
simple intercation ( jog wheel)

61
Q

name common media file formats for audio

A

MP3 and WMA

62
Q

name common media file formats for stil images

A

JPEG, GIF and PNG

63
Q

name common media file formats for videos

A

MPEG-4 and WMV

64
Q

name some security features of personal media players (8)

A 
locks automatically
uses antivirus software
hard reset fature to delete data when the devise is disposed of or sold
remote manadgement if lost or stolen
hides bluetooth sharing to stop others acessing files
backup features 
encrypting of data
biometric authenticication
65
Q

define DRM

A

digital rights manadgement
prevents you making coppies of the file downloaded on your device. it also prevents you transfering the file too.
protects copyright by preventing illegal copying

66
Q

howcan persona media players connect/

A

USB port
HDMI port
wireless transfer

67
Q

how do usb ports work on media devices, how much can they transfer?

A

allows a transfer of files at up yo 5 iggabytes per second with a USB 3.0 cable

68
Q

what odes a hdmi cable port on amedia device allow the user to do?

A

view hd movies on tv through the hdmi cable

69
Q

how can media players connect wirelessly?

A

wifi
bluetooth
infared

70
Q

list 2 advantages of streaming videos?

A
  1. saves time as you dont have to dwnload a file,it is dne rea time
  2. uses less storage space unlike downloading
71
Q

how can you stream videos?

A

if a device has wifi then the user can stream media, the file is snet in a compressed format over the internet and displayed real time by the viewer

72
Q

what are the 3 disadvantages of streaming videos?

A
  1. user experience depeneds of connection quality
  2. limited availablty for some steamed videos
  3. cannot keep a local copy for viewing ofline
73
Q

name 4 feature of games consoles.

A

capable of multiplayer gaming
cd dvd and bluray options
high resolution output for hd gaming
connectivity (usb bluetooth wifi ethernet cable)

74
Q

what perhipherals do games consoles use? (6-8)

A 
wireless controlers
wireless headsets
hard drive transfer cable
webcam/speaker/microphone
motion sensor
hd equiptment
75
Q

how does wireless and hands-free gaming work?

A

some use motion sensors where others use lasers and infared camera
eg. nintendo wii, playstaion3 xbox kinect

76
Q

what is a smart tv? whats it used for?

A

also called a ‘connected tv’ as it has inerner connection. it is used for online intercative media, ondemand film and game streaming

77
Q

what future development is helping gaming?

A

a neuro headset
controling a game using throughts alone. an iphone app is available that allows users wearing a neuro headset to conrol objects on the screen game using thoughts

78
Q

what is the cause and possible sollution of overuse injuries in games consoles?

A

cause: pressing buttons leads to RSI in the thumbs
prevention: set time limits, take breaks, switch up controlers

79
Q

what is the cause and possible sollution of obesity in games consoles?

A

cause; amount of time playing games and obesity has been linked
prevention:set time limits, do physical exercise when not playing

80
Q

what is the cause and possible sollution of muscle and joint pain in games consoles?

A

cause: hours in the same position impacts on posture and spine
prevention: take breaks and move about/stretch, adjust furnitture to suit your height, use an eronomic chair

81
Q

what is the cause and possible sollution of eye strain in games consoles?

A

cause: eyes become fatigued when focused on the same distance for log periods of time, symptoms include blurry vision and headaches
prevention: adjuse screen contrast /brightness, move furtiture for light is not shining on the screen, take gaze breaks to look into the distance

82
Q

what are signs of games console overuse? (7)

A

spend free time gaming
lie about how long you spend gaming
rather play games than see friends/family
use gaming to escape
irratatedagitaed when not playing
not keeping up with work and grades are falling
giving up other hobbies

83
Q

how can games consoles affect behaviour (violent games)

A

they can cayse agression and decrease empathy for others

playing a shoting game for 10hrs a week can reslut in less brain activy and less thinking /emotional controll

84
Q

what has the govenrment done about violent games and the effects on behaviour?

A

passed laws that prhibit/ ban some violent games

games have been clasified the same as films

85
Q

what are home entertainement systems designed for?

A

to provide high qualty audio and videos throughout a house and intergrate the separate digiatal devices content.

86
Q

what are the advanatges of digital television compared to analogue?

A 
more channels than analogue
higher quality
digital radio accesable on tv
epg available
more accesabe (subtiles and sigh language description)
interactive feautres
greater control (pause rewind)
87
Q

define epg

A

electronic programme guide that displays programme information onscreen

88
Q

how has the internet and tv been linked/ used together

A

smart tv’s and game consoles allow user to strea, chanels or films from the internet
apple tv allows uers to acess files stored in their icloud

89
Q

in what two ways can digital tv signals are delivered to the home?

A

by cable or satellite

90
Q

what do digital projectors do?

A

project hd images form a computer, set top box, personal media player, or dvd onto a screen or wall, it is a home entertainment enhancement

91
Q

how have home films been enhanced?

A

projectors, home cinemas/ theatre systems

high fidelity surround sound

92
Q

what is a PVR?

A

a personal video recorder or a DVR a digital video recorder that contains a hard disk drive alwing you to record tv programmes

93
Q

what is set top box

A

it tramsforms and enhances the signal form the cable or satellite to a form that the tv can register

94
Q

how does wifi intergration work? and an example

A

it allows home wifi networks to intergate medic devices, eg you can acess your cd collectsion form every room via a music server with the actual album cover art displayed

95
Q

define DLNA

A

digital living netwrok alliance
if two devices are dlna certified then they are compatible straight out of the box. you can acess content form your pc, camera , tv or smartphone. you can play music rom personal media player through hi-fi without plugging anything in to transfering between devices

96
Q

define satellite navigation systems and who uses them?

A

satnavs use gps to plan routes and give direction. satnavs are used by drivers, pedestrians and gocacher

97
Q

what do drivers use satnavs for?

A

checking speeds
get live traffic reports and avoid congestion
find senic routes/ conveniences (service station)

98
Q

what are the health and saftey issues with sat navs?

A

driver may take eyes off the road and cause an accident whilst adjusting settings
device coud cause a blind spot
device can lead driver down hard to navigate roads or incorrect destinations

99
Q

how do pedestrians use satnavs?

A

to find their way in cities or the counryside. they use small waterproff and shockproff devices that give geographical coordinates and contain compassed

100
Q

how do goeocachers use satnavs?

A

they participate in treasure hunts to locate hidden containers. they use gps enabled evices to share experinces online

101
Q

what is convergence?

A

where digital devices take on fuctions normally found in other devices. gps and satnav functions are now available on a variety of devices

102
Q

what devices now offer satnav and gps fuctions?

A

smartphones and gps recievers and have many route planning apps

103
Q

how have satnav producers responded to keep up with convergence?

A 
larger screens
3d display
lane assist for juctions
bluetooth to link phones for calling
eco-routes to save petrol
104
Q

advantges of using a smart phone as a satnav?

A

always have your phone on you.
phones are small/light
there are apps form leading satnav companies on smartphoes you can buy

105
Q

disadvantages of using a smartphone as a satnav?

A

satnav apps are expenisve if your phone doesnt come with it
have to pay roaming charges if you dont have a good deal for mobile internet
using gps runs battery down
smartphone satnav doesnt update quickly

106
Q

how can a blind person use a satnav?

A

the satnav will speak their location at a press of a utton

107
Q

how can satnavs help people with disabilities?

A

they can provide information on disabled parking and local info ( toilets, facilities in shops, train stations and public places)

108
Q

how do orgainisations use computers?

A

storing data, design tasks, production tasks, panning, advertising, communicating

109
Q

how are portable digital devices used in organisations?

A

employess have them and they make remote acces through wireless and 3G networks by storing data and files in a cloud

110
Q

whats an advantage of using a portable digital device in an orgainisation?

A

alows greater collaboratio between workers at different sites

111
Q

whats a disadvanatge of using portable digital devices in organisations?

A

puts orgainsations at risk of hackers stealing or corrupting data

112
Q

how can an organisation use a website?

A

it showcase gods and services and sell online

113
Q

how can an organisation use a blog?

A

to tell customers about developmnets in a more personal way

114
Q

how can an organisation use social networking sites?

A

the presence of social networks allows them to monitor comments and engage in discussions

115
Q

how can and organisation use viral marketing?

A

to advertise services through video uploads

116
Q

how can an organisation use profiling?

A

tracking informaion about customers information throug cookies

117
Q

how migt a sales rep who travels use a smartphone to communicte with people?

A

use bluetooth to speak to customers whilst driving

use 3g/wifi when in a hotel to email/chat/text with colleagues

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