module 1.2- input and output (t)

Question 1

input

Answer 1

-provides running software with instructions on what to do next
-can be data that must be processed

Question 2

advantages of digital cameras

Answer 2

-can take many photos
-images can be seen immediately
-easy transferring

Question 3

scanners

Answer 3

input device that scans an image to a computer
-barcodes, photos, documents

Question 4

image quality of scanners are determined by…

Answer 4

-resolution and colour depth
-software allows to specify resolution
-higher the DPI the higher the quality the larger the file

-number of different colours thats represented by a pixel
-higher the colour depth the larger the image file

Question 5

advantages of scanners

Answer 5

-scanning large documents
-electronic copies stored digitally
-copies can be emailed directly
-old documents can be stored
-scanning QR codes to connect to websites

Question 6

disadvantages of scanners

Answer 6

-can take a lot of time
-quality may vary

Question 7

biometric input

Answer 7

capturing unique biological features
-used instead of passwords
-higher security

Question 8

input at ATMS

Answer 8

-pin, menu, choices
-card reader, touch screen, money counter

Question 9

advantages of ATMS

Answer 9

-banking transactions whenever
-international

Question 10

disadvantages of ATMS

Answer 10

-can be dangerous

Question 11

input into POS systems

Answer 11

barcodes and RFID (radio frequency identification) tags
-used automatically to recognise a product
-scans the barcode
-detects data

Question 12

barcodes and RFID 2 main goals

Answer 12

-faster processing at pay points
-better stock control

Question 13

advantages of POS systems

Answer 13

-faster
-prices updated daily
-records how many items are left in stock

Question 14

disadvantages of POS systems

Answer 14

-difficult to function when systems are offline
-expensive equipment and software

Question 15

what’s NFC

Answer 15

Near Field Communication
-allows us to pay through out phones wirelessly by tapping them

Question 16

data collection devices

Answer 16

-meter readers to capture water readings
-monitors patient’s temperature/ heart rate etc

Question 17

advantages or data collection devices

Answer 17

-data captured using sensors
-data captured accurately
-faster than human input

Question 18

disadvantages of data collection devices

Answer 18

-sensors can fail
-devices can be difficult and expensive to repair/update or replace

Question 19

input into smartphone and tablets

Answer 19

-touch screen
-hardware buttons
-camera/ video camera
-accelerometer
-microphone

Question 20

alternative keyboards

Answer 20

-virtual keyboards
-projection using laser or led lights
-wireless technology uses radio waves to connect input devices

Question 21

output

Answer 21

-provides user with feedback in their interactions
-non permanent, electronic copy
-allows transmission of data

Question 22

types of output

Answer 22

visual output
-hard and soft copies
sound output
-speakers or headphones
touch output
-joysticks and controllers vibrate

Question 23

display devices

Answer 23

display options that allows the user to make choices/ interact with the program
-display the results of processing

Question 24

advantages of display devices

Answer 24

-immediate feedback
-interaction between user and computer
-display content easily changed
-text can be enlarged for visually impaired

Question 25

disadvantages of display devices

Answer 25

-output is not permanent
-can lead to eye strain/ headaches
-expensive to replace

Question 26

printers specifications

Answer 26

-speed
-resolution
-monthly duty cycle
-number of colours
-paper options
-connections

Question 27

laser printers

Answer 27

-more reliable
-easier to maintain
-cheaper

Question 28

inkjet printers

Answer 28

-better photo quality

Question 29

3D printers

Answer 29

creates physical three dimensional objects

Question 30

wireless technology in output devices

Answer 30

-wireless printing
-wireless sound
-wireless video and image sharing

Question 31

advantages of interactive whiteboards

Answer 31

-computer functions can be manipulated
-better interaction and manipulation
-info can be saved and accessed again

Question 32

disadvantages of interactive whiteboards

Answer 32

-dim venue required
-expensive
-suitable software not always available

Question 33

drivers

Answer 33

software that allows a computer to communicate with hardware or devices and control them

Question 34

plug and play

Answer 34

-detects and configures a device so it can be used immediately

Question 35

visually impaired uses

Answer 35

-braille keyboard and display devices
magnified devices
-large key keyboards
-braille printers

Question 36

hearing impaired uses

Answer 36

-flashing screen instead of sound
-vibration

Question 37

motor control

Answer 37

-eye tracking devices
-head movement devices
-large trackballs