Input devices

studied byStudied by 1 person
5.0(1)
Get a hint
Hint

input device: definition

1 / 31

encourage image

There's no tags or description

Looks like no one added any tags here yet for you.

32 Terms

1

input device: definition

a device that can be used to put data and info into a computer

New cards
2

manual methods

Involve human entering data (e.g via keyboard)

New cards
3

automatic method

human batch jobs together and leave comp to automatically read data

New cards
4

automatic method: advantage

Ideal for high volume of work

New cards
5

criteria of choosing a device (4)

- cost

- speed

- accuracy

- reliablity

New cards
6

basic examples

- keyboard

- mouse

- microphone

- touch screen

New cards
7

graphics tablet

creates digital drawings using a stylus

New cards
8

OMR scanner

optical mark recognition - used to input answers or marks made by omr sheet (e.g lottery/11+)

New cards
9

magnetic strip reader

magnetic strip on a card hold data that is read by a machine - hotel cards

New cards
10

smart card reader

reads data from embedded chips - inserting a card

New cards
11

NFC reader

Reads data from a near field communication tag - contactless

New cards
12

barcode: how does it work?

represent data by using a set of parallel lines of varied width and spacing which represent different values

New cards
13

barcode: terminators

at start/end of code there are terminators which allow reader to know when the barcode begins/ ends - allows code to be read upside down

New cards
14

barcode: check digits

an extra digit/char added to end - used for validation

New cards
15

QR codes (quick response)

provides a link for website or app

New cards
16

qr codes: capacity

7089 numbers or 4296 characters

New cards
17

QR vs barcode

qr - higher capacity

New cards
18

sip/puff switch

pneumatic device that allows users to control comp systems by drawing or blowing air into sensor reader

New cards
19

foot switch

user controls input to system through series of pedals

New cards
20

braille keyboard

keys have 2 raised representations of characters - printed + braille

New cards
21

biometrics: what is it?

physical characteristics (fingerprint, facial images, irises + voice)

New cards
22

digital camera: real life use

Mastercard trialing new app allowing customers to make online purchases by taking selfie rather than password

New cards
23

RFID (radio frequency identification): what is it?

allows data to be transmitted wirelessly over radio waves

New cards
24

RFID: 2 parts to an RFID system

tag and reader

New cards
25

RFID: how does it work

made up of antennas for receiving + transmitting radio frequency signals and chip which processes the signals

New cards
26

RFID: use of radio signals

means system does not require line of sight b/w tag and reader

New cards
27

RFID: tag

has a unique idengifier which often stores data in a non-valtile memory cell

New cards
28

RFID: uses

- employee IDs

- identifying pets

- tracking farm animals

New cards
29

Touch screen : advs

- faster entry than mouse

- user friendly (no training)

- tamper proof to prevent keying info not wanted

New cards
30

Touch screen: disadvs

- limited number of options available

- dirty screen from constant touching

New cards
31

sensors + actuator

Records data from physical environment then control systems use sensors as analogue inputs which get converted to digital

New cards
32

actuators

Output device for physical motion

New cards

Explore top notes

note Note
studied byStudied by 18 people
... ago
4.0(1)
note Note
studied byStudied by 12 people
... ago
5.0(1)
note Note
studied byStudied by 34 people
... ago
5.0(1)
note Note
studied byStudied by 13 people
... ago
5.0(2)
note Note
studied byStudied by 1 person
... ago
5.0(1)
note Note
studied byStudied by 57 people
... ago
5.0(1)
note Note
studied byStudied by 22 people
... ago
5.0(1)
note Note
studied byStudied by 1975 people
... ago
4.7(11)

Explore top flashcards

flashcards Flashcard (93)
studied byStudied by 1 person
... ago
5.0(1)
flashcards Flashcard (115)
studied byStudied by 13 people
... ago
5.0(2)
flashcards Flashcard (22)
studied byStudied by 17 people
... ago
5.0(3)
flashcards Flashcard (75)
studied byStudied by 2 people
... ago
5.0(1)
flashcards Flashcard (29)
studied byStudied by 27 people
... ago
5.0(2)
flashcards Flashcard (40)
studied byStudied by 1 person
... ago
5.0(1)
flashcards Flashcard (20)
studied byStudied by 1 person
... ago
5.0(1)
flashcards Flashcard (134)
studied byStudied by 2615 people
... ago
4.0(26)
robot