Input And Output Devices

Front 1

What is a keyboard?

Back 1

Allows text and symbols to be entered into the computer.

Front 2

Advantage and disadvantage of a keyboard?

Back 2

Enable fast entry of new text into a document.
Fairly large, take up valuable desk space.

Front 3

What is a concept keyboard?

Back 3

Uses icons or phrases instead of standard letters.Used in fast food restaurants.

Front 4

Advantage and disadvantage of a concept keyboard?

Back 4

Enable fast data entry. Limited with options shown on the keyboard.

Front 5

What is a numeric keypad?

Back 5

Used to enter number only.Used in ATMs where you type in your personal identification number(PIN).

Front 6

Advantage and disadvantage of a numeric keypad?

Back 6

Faster then standard keyboards. Can be difficult to use, very small keys.

Front 7

What is a mouse?

Back 7

It is a pointing device, you move the mouse around so you can control the pointer on the screen. Used for opening, closing and minimising software.

Front 8

Advantage and disadvantage of a mouse?

Back 8

Faster to select an option then using a keyboard. They are difficult to use if there is no flat surface available.

Front 9

What is a touchpad?

Back 9

Used in laptops as a pointing device. Controlled by the user moving their finger on the touchpad. Can be used for grouping, moving and deleting files.

Front 10

Advantage and disadvantage of a touchpad?

Back 10

Integrated into the laptop, so no need for a mouse-less to carry. Can be more difficult to control the pointer compared to a mouse.

Front 11

What is a trackerball?

Back 11

The ball is on top of the device and you control the pointer by rotating the ball. Used in applications where the user has a disability.

Front 12

Advantage and disadvantage of a trackerball?

Back 12

Don't need the same fine control as a mouse. User may need training, not standard equipment.

Front 13

What is a remote control?

Back 13

A device used to control the operation of devices by using infrared signals. Used for television.

Front 14

Advantage and disadvantage of a remote control?

Back 14

You can use it from any distance. The signal between the control and the device can be easily blocked.

Front 15

What is a joystick?

Back 15

By gripping the stick, a pointer on the screen can be controlled. Used in video games.

Front 16

Advantage and disadvantage of a joystick?

Back 16

Easier to navigate round a screen rather then a keyboard. More difficult to control the on-screen pointer then with a mouse.

Front 17

What is a touch-screen?

Back 17

You can choose an option by touching the icon on a screen. Used on interactive white boards used for education.

Front 18

Advantage and disadvantage of a touch-screen?

Back 18

Faster entry of options rather then using a keyboard. Limited number of options available.

Front 19

What is a magnetic stripe reader?

Back 19

They read information found on the stripe. Credit cards have them so they can be used at ATMs.

Front 20

Advantage and disadvantage of a magnetic stripe reader?

Back 20

Data entry is faster rather then keying in your details. If it gets damaged, the data is lost.

Front 21

What is a smart card reader?

Back 21

They contain chips with data stored on. Used on ID and public transport cards.

Front 22

Advantage and disadvantage of a smart card reader?

Back 22

Used instead of money, easier. If the card is lost, information stored on the chip could be used in identity theft.

Front 23

What is a chip and PIN reader?

Back 23

You slot your card into the device and the chip is read. The PIN is put in using a keypad. Used in shops.

Front 24

Advantage and disadvantage of a chip and PIN reader?

Back 24

Provide a more secure payment system then using a signature or magnetic stripe. Make sure no one reads your pin.

Front 25

What is a scanner?

Back 25

Used to enter information on hard copy into a computer.Scan in documents and convert them into a format for use in various software

Front 26

Advantage and disadvantage of a scanner?

Back 26

Faster and more accurate then typing.The quality can be limited, depends on how good the resolution is.

Front 27

What is a barcode reader?

Back 27

Used to read information in the form of a bar code. Usually in the form of a scanner. Used in supermarkets.

Front 28

Advantage and disadvantage of a barcode reader?

Back 28

Faster then keying in data and less mistakes are made. Not a foolproof system, codes can be swaped around on items.

Front 29

What is optical mark recognition (OMR)?

Back 29

A system which can read marks written in pen or pencil. Used to read multiple-choice examination papers.

Front 30

Advantage and disadvantage of OMR devices?

Back 30

More accurate than keying in data.The forms need to be carefully made to make sure that the marks are correctly positioned for good info.

Front 31

What is a optical character recognition(OCR)?

Back 31

Name given to software that takes scanned text and converts it into a computer readable form. Used in the processing of passports and identity cards.

Front 32

Advantage and disadvantage of OCR readers?

Back 32

Since no manual data entry, the number of errors is reduced.The system still has difficulty reading handwriting.

Front 33

What is a magnetic ink character recognition(MICR)?

Back 33

A system which can read characters printed in a special ink. Used to process cheques in banking operations. They can be read by using batch processing.

Front 34

Advantage and disadvantage of MICR devices?

Back 34

Greater security then OCR since the printed characters can't be altered. Only certain characters can be read and the number of different characters is very limited.

Front 35

What is a digital cameras?

Back 35

Produce photographs ofr transfer to a computer directly by a simple USB connection.

Front 36

Advantage and disadvantage of digital cameras?

Back 36

Easier to produce better quality photographs than with a traditional camera. Need to be know how to put it onto the computer.

Front 37

What is a webcam?

Back 37

They're connected directly to the computer through a USB port, they don't have a memory. Personal way of having a conversation whilst online.

Front 38

Advantage and disadvantage of a webcam?

Back 38

To keep in contact with each other without the need to travel, limited features, have a poor quality picture.

Front 39

What is a microphone?

Back 39

Directly connected to a computer, sounds can get inputted and manipulated.

Front 40

What is an analogue to digital converted(ADC)?

Back 40

Input sound is converted to an analogue signal and then converted into a digital signal. Used to input speech/sounds to be used in various applications.

Front 41

Advantage and disadvantage of a microphone?

Back 41

It's faster to read in text then to type it in using a keyboard.Sound files can take up a lot of memory.

Front 42

What is a sensor?

Back 42

Inputs data to a computer, where the data is a measurement of some physical quantity which is always changing like light,temperature.

Front 43

Advantage and disadvantage of a sensor?

Back 43

Readings taken are usually more accurate then those by human operators.Faulty ones can give bad results.

Front 44

What is a graphics tablet?

Back 44

Used with a stylus to produce freehand drawings. They are used in computer aided design (CAD) work.

Front 45

Advantage and disadvantage of a graphics tablet?

Back 45

Possible to modify drawings before they are input. More expensive then other pointing devices.

Front 46

What is a light pen?

Back 46

Have sensors that send signals to a computer when light changers are detected, they work with a cathode ray tube(CRT). Used for selecting objects on CRT screen.

Front 47

Advantage and disadvantage of a light pen?

Back 47

More accurate than touch screens.Only work with CRT monitors at the moment.

Front 48

What is a CRT monitor?

Back 48

Used as the primary output device for computers, they are becoming rare because of desktop computers.

Front 49

Advantage and disadvantage of a CRT monitor?

Back 49

Produce a higher quality image than TFT monitors. Heavy, take up a lot of desk space.

Front 50

What is a TFT monitor?

Back 50

Taking over CRT moniters, used as the primary output device.

Front 51

Advantage and disadvantage of a TFT monitor?

Back 51

Lightweight.The definition isn't sometimes good as CRT monitors.

Front 52

What is a laser printer?

Back 52

Produce very high quality hard copy output. Used where noise levels need to be kept low.

Front 53

Advantage and disadvantage of a laser printer?

Back 53

Good for printing high volumes fast.Very expensive to buy.

Front 54

What is an inkjet printer?

Back 54

Used to make good quality hard copies, not for as high volumes of paper, not very noisy.

Front 55

Advantage and disadvantage of an inkjet printer?

Back 55

Output is of a high quality.Very slow if several copies are needed.

Front 56

What is a 3D inkjet printer?

Back 56

Produces solid 3D modes using modified inkjet technology, used to make prototypes.

Front 57

Advantage and disadvantage of a 3D inkjet printer?

Back 57

Save a lot of money, creating prototypes are really expensive.Slow at producing their output.

Front 58

What is a dot matrix printer?

Back 58

The printhead is a matrix of pin, tend to be slo and bad quality.

Front 59

Advantage and disadvantage of a dot matrix printer?

Back 59

Used in environments where there would be a problem with other printers,like dust.They cost more than an inkjet printer to buy.

Front 60

What is a plotter?

Back 60

They can produce hard copies. they are capable of printing highly accurate, large drawings. Used for blueprints of buildings.

Front 61

Advantage and disadvantageof a plotter?

Back 61

Produce huge printouts.They are slow in operation.

Front 62

What is a speaker?

Back 62

Can be connected directly to a computer or are built into the monitor.

Front 63

Advantage of a speaker?

Back 63

Used to output sound from multimedia presentations.

Front 64

What is a multimedia projector?

Back 64

They recieve signals that are either analogue or digital. Used in presentations so the whole audience can see.

Front 65

Advantage and disadvantage of a multimedia projector?

Back 65

Avoid the need for several networked computers. Images can be fuzzy sometimes