Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ict > chapter 2-input and output devices > Flashcards

chapter 2-input and output devices Flashcards

1
Q

what are input devices

A

hardware devices that allow us to enter data into a computer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

whhatre the 2 types of input devices

A

manual input devices-involves lots of human effort
direct data entery devices-machines that nee little human effort

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

whatre the characteristics and uses of keyboards

A

-common and easy way of data entry
-can be wired or wireless
-can be virtual on tables and phones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are the advantages of using keyboards

A

easy to use for most people
fast data entry into documents
easy to verify data during entry

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the disadvantages of using keyboards

A

slow data entry compared to dde devices
take up desk space
can be diffifuclt to use

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are the uses of numeric keypads

A

-numeric data entry,some allow short text and symbols
-for fast spreadsheet data enrty
-used on atms and chip and pin devices

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

whatre the advantages and disadvantages of numeric keypads

A

pros-faster than keyboard in terms of numeric data entry,portable compared to keyboards.
cons-difficult to use since keys are small,difficult to enter texts esp on phones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

whatre the uses and charcteristics of a mouse

A

-move around on smooth surface to control a cursour on screen
-can be wired or wireless
-used for opening closing and minimising software

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

whatre the advantages and disadvantages of mouses

A

adv-fast method for selecting apps,little desk space
dis-cant use if surface isnt flat,easy to get damaged and dirty

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

whatre the uses and characteristics of touchpads

A

-main pointing devices on laptops
-move fingers on surface and gently tap

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

whatre the advantages and disadvantages of touchpads

A

adv-faster than keyboards,no need for seperate and extra desk space
dis-difficult to use with hand and wrist problem,harder to use than normal mouse

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

trackerballs

A

used in control rooms with minimal desk space
-more accurate than mouse
luxy cars to select functions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

whatre the advantages and disadvantages of trackerballs

A

adv-more accurate positioning than moise,doesnt need specific surface to work,less desk space,good fir ppl w wrist issue
dis-expensive,unknown so may be hard to use

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

remote control

A

used to control functions on tv

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

whatre the advantages and disadvantages of remotes

A

adv-operate at good distances unlike wired stuff,easy to use
dis-easy to loose device,batteries need to be replaced,infrared signl could be blocked

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

joystick and driving wheels

A

-both used for gaming consoles and simulators to mimic actual controls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

whatre the advantages and disadvantages of joystick and driving wheeks

A

adv-more releasting than mouse in simulations,easier and more accurate than mouse for controlling movement
dis-movement can be too sensitive which makes it difficult,doesnt allow feedback in simulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

touchscreen uses

A

-self service machines
-atms to enter money
-pibluv info kiosk
-phones n tablets
-training on computers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

whatre the advantages and disadvantages of touchscreen

A

adv-fast data entry and easy interface,easy to expand screen size,easier to keep clean since the surface is glass
dis-limited choices,screens can get dirty easily and scratched which causes them to malfunction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

uses of scanners

A

-scan paper and socuments to be saved as an electronic format
-archive old valuble docs
-scan barcodes in stores

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

whatre the advantages and disadvantages of scanners

A

adv-converts test to digital which allows it to be edited and used in other sdocs,recovers old photos and docs,scanner becomes dde device when used for barcodes
dis-quality depends on resolution,slow process,if barcode is damaged it wont be read correctly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

digital camera uses

A

-take photos or videos
-data capture
-dentistry to photograph teeth
-cirtual tours in buildings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

whatre the advantages and disadvantages of digital cameras

A

adv-takes many photos,dont need to develop photos,easy to store photos on other devices
dis-need to be good with computers,some is lost since brightness altered by software,compression of image leads to qulity loss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

ues of microphone

A

-input speech to be used in presentation and music
-sensory to pick up sounds
-video calls
-input for disabled ppl

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

whatre the advantages and disadvantages of microphones

A

adv-fast method,allows manipulating sounds,used in voice activated systems
dis-sound files take up large memory,verbal input can be innacurate,certain functions can be accidentally activated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

analouge sensor uses

A

-measure physical data and send to computer
-temp sensors
-pressure sensor
-light sensor
-ph sensor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

whatre the advantages and disadvantages of analouge sensors

A

adv-accurate and continuous (nothing missed)readings,useful in hazardous areas,automatically sent to computer
dis-faulty readings can be dangerous,require ADC to be converted to digital

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

light pen uses

A

-selecting objects on crt(cathode ray tube) screen
-used w cad softwares

29
Q

whatre the advantages and disadvantages of light pens

A

adv-greater accuracy than touchscreen,small and saves space,easy to use
dis-lags when moving,only works w crt,old

30
Q

magnetic stripe readers

A

-reads info from magnetic stripes on back of cards (holds info like acc number and dates but not pin)
used for- depit cards in atm,security cards for buildings

31
Q

whatre the advantages and disadvantages of magnetic stripe readers

A

adv-faster data entry than keyboard,error free since no typing,info is secure since it isnt readable
dis-if its damaged it cant be read,reader needs to be in close contact,devices can clone data

32
Q

contactless debit cards

A

RFID chip embedded in card containing data,radio frequency reader can read it from few cm away
used for debit cards without entering pin

33
Q

whatre the advantages and disadvantages of contactless debit cards

A

adv-faster since u dont need to enter or remember pin,retailers have access to info
dis-possible to monitor,max transaction limiyted to small amt

34
Q

chip and pin reader

A

card insidered into devices and chip is tead then.a pin entered which matches whats stored on the chip before transaction is placed
dis-make payments,card reader needs wifi to conact bank when u make transaction

35
Q

whatre the advantages and disadvantages of chip and pin readers

A

adv-recure than contactless payment,limit much higher than contactless
dis-if pin is accessed it can be clones,lack of spending limit will be an issue if the card is stolen

36
Q

radio frequency identification RFID readers

A

use radio waves to read and capture info stored on tags made of microchips and antennas
used for - tracking livestock,retail(tag automatically read),security,admission passes at parks,libraries

37
Q

whatre the advantages and disadvantages of RFID

A

adv-tags read from reaonable distances,fast,bidirectional data transfer,bulk detection,difficul tto copy or alter
dis-tag collisions,waves blocked or jammad,hackers into transmitted data,complex n expensive

37
Q

optical character recognition

A

converts text into electronic formats which is then processed and used
uses-processing passports in airports,converting writtentext,identify car plates,gigitalise valuable docs

38
Q

omr Optical mark recognition

A

-can read marks in pen or pencil on preprinted forms
used for-reading questionare responses,marking exams,counting in elections

39
Q

whatre the advantages and disadvantages of OMR

A

adv-fast method of data input,accurate(no typing errors),faster than OCR
dis-expensive and complex forms that need to be carefully designed,instructions need to be given on how to fill in forms

39
Q

barcode readers

A

-read barcode labels by led or laser scanners which scan thickness of light n dark lines then converts it into digital data.
uses- labeling supermarket products,tracking books on loans,safety records

39
Q

whatre the advantages and disadvantages of OCR

A

adv-faster than manual data entry,more accurate and less error prone,customers can expand on answers unlike omr
dis-system might not detect certain handwritting,compkex and expensive,scanning isnt always accurate

40
Q

whatre the advantages and disadvantages of barcode readers

A

adv-faster checkout and less error prone,automatic stock control,well tried and trusted
dis-barcodes can be altered or stolen,easily damaged compared to rifd and magnetic stripe,cant be scanned if damaged

41
Q

quick response codes

A

-made of dark squares on light bg
uses-advertising(code contains number and website),contain weblinks,store wifi details,in AR,virtual online stores

42
Q

whatre the advantages and disadvantages of qr codes

A

adv-store more data than barcodes,less errors (built in error checking),wasier to read(phone cameras),more secure
dis-more than 1 format,cam be used to store bad content where user is sent automatically to mallware websites

43
Q

whatre the uses of crt (cathode ray tube) monitors

A

specialist area like cad where light pen is used to draw and select items

44
Q

whatre the advantages and disadvantages of CRT monitors

A

adv-large viewing angle,lightpens
dis-heavy,hot (fire),more power consumption than lcd,flickers cause headaches and eye issues

45
Q

LCD (liquid crystal display) monitors uses

A

-made of tiny liquid crystals backlit with leds
uses-output for computer laptop and phones,touchscreen tech

46
Q

whatre the advantages and disadvantages of LCD monitors

A

adv-efficient with low power consumption,lightweifgt,no image burnin or flickers,sharp image resolution
dis-color and contract inconsistent from diff angles,motionblur,weak pixels,need backlighting from led screens

47
Q

uses of LED montiors

A

light emitting diode (tiny matrix of tiny leds)
used in large outdoors outdoor displays

48
Q

whatre the advantages and disadvantages of led monitors

A

adv-no motion lag,no backlighting needed,low power consumption,long lasting,variety of screen size
dis-more expensive than lcd,color shift(white turns yellow)bc of age and temo,inconsistent ratios

49
Q

touchscreen uses

A

smartphones and tablets
atms
ticket machines
info kiosks

50
Q

whatre the advantages and disadvantages of toucscreens

A

adv-faster and easier data entry,not error prone,easy to clean,multitouch functions,creative interface
dis-screens can become dirty easily ->malfunctions,no mechanical interface so user doesnt know if his action registered

51
Q

multimedia projectors

A

-take computer output and enlarge it to be projected
uses= large presentations (multiple ppl can take part),advertising in malls,home cinema systems

52
Q

whatre the advantages and disadvantages of multimedia projectors

A

adv-large audients,avoids needing several compiters,saves space since they can be put on ceelings
dis-image can be blurred or incorrect shades,expensive to maintain and initially,darkened room needed,need seperate audio systems

53
Q

laser printers

A

-use rotating drums and dry ink cartridges and electrostatic printing
uses-where low noise is required,high fast quality printed needed

54
Q

whatre the advantages and disadvantages of laser printers

A

adv-faster than inkjet for bulk printing,high quality,cartridges last long,paper tray has large capacity
dis-expensive running and maintenance (toner needs to be repurchased),produces ozone gas,cant handle lots of materials,larger and heavier

55
Q

inkjet printers

A

-use thermal bubble or pizeoelectric tech, 4-5 wet ink cartidge and stepper motors to feed papers
uses-low volume prints,high color quality,unsual printing medium

56
Q

whatre the advantages and disadvantages of inket printers

A

adv-low cost,wide variety of print materials,cheaper than laster,cartidges refilled,lighter and takes less space,dont produce ozone gas
dis-ink is expensive,not good for bulk prints,ink can dissolve,cleaning,not as durable as laster

57
Q

dot matrix printers

A

-impact printer than uses inked ribbons (similar to typewriter) and contains printheeads
uses-damp or dusty atmosphere,where noise isnt an issue,bulk printing

58
Q

whatre the advantages and disadvantages of dot matrix printers

A

adv-used in harmful environmenys,multipart copies,cheap to run and maintain,contineous print sheets
dis-outdated tech,poor quality,limited color printing,slow,noisy

59
Q

graph plotters

A

use pens to draw lines on large sheets of paper or plastic
uses- architectural and engineering drawings,animated characters

60
Q

whatre the advantages and disadvantages of plotters

A

adv-high quality drawings,monochrome or colored drawings,variety of printing mediums,not expensive
dis-slow printing,expensive initially,large space to run

61
Q

3d printers

A

use additive printing tech where solid objects are made up of thin layers
uses-prosthetic limbs,precision parts for industries,fashion and art,parts for items no longer in production

62
Q

whatre the advantages and disadvantages of 3d printers

A

adv-easier,quicker and less expensive than producing real prototypes,medical benifits (organs artifically),usefull instead of throwing away old items
dis-counterfiet items easier to make,can lead to illegal activities,slow process,job losses,expensive

63
Q

speakers

A

convert signals to sound
uses-multimedia presentations,interface fir disabled ppl,music,warning systems

64
Q

whatre the advantages and disadvantages of speakers

A

adv-sounds add creativity and intrest to presentations,useful for disables people,welltried
dis-output can be annoying in office environments,expensive

65
Q

acutators

A

used in control applications
uses-switches,allow computers to control devices using dac

66
Q

whatre the advantages and disadvantages of acutators

A

adv-automatic control of devices,inexpensive
dis-need DAC interface if ur sending signals to an acutatpr,aditional device could go wrong

ict (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions