Input and Output devices

Question 1

what is an alphanumeric keyboard?

Answer 1

Inputçit is a common input device that allows text, numbers and symbols to be entered in a computer

Question 2

what is a numeric keypad?

Answer 2

Input

smaller keyboard that only has numbers. It is used to enter numeric data into computers

Question 3

what is a Pin pad?

Answer 3

Input

device with numeric keypad used to enter a person’s Personal Identity Number (PIN)

Question 4

what is a mouse?

Answer 4

Input

a pointing device found in most PCs. There are sensors on the bottom of the mouse that detect when the mouse is moved

Question 5

what is a touch pad?

Answer 5

Input

a pointing device found on most laptops. Used instead of a mouse because it takes less space

Question 6

what is a trackball?

Answer 6

Input

a pointing device that has a large ball that spins. They are often used by people with limited movement (disabilities)

Question 7

what is a touch screen?

Answer 7

Input

an alternative pointing device. Users can select things on device by simply touching the screen

Question 8

what are graphic tablets?

Answer 8

Input
they are a pointing device used by designers and artists to allow natural hand movements to be input to graphics applications

Question 9

what is a joy stick?

Answer 9

Input
mainly used for video games. The users moves the joystick left, right, forward or back and data corresponds to these movements

Question 10

what is a light pen?

Answer 10

Input

a device used in a pointing device to write on the screen of a computer

Question 11

what is a scanner?

Answer 11

Input

a device that scans images, book pages, etc.

Question 12

what is a digital camera?

Answer 12

Input

a device that capture digital photography

Question 13

what is a video camera?

Answer 13

Input

a device that captures moving images, or video

Question 14

what is a web cam?

Answer 14

Input

a basic video camera used to feed live video into a computer

Question 15

what is a microphone?

Answer 15

Input

something that converts sound into a signal that can be fed into a computer

Question 16

what is a magnetic strip reader?

Answer 16

Input
Many plastic cards, such as credit cards, have a strip of material that can be magnetised on the back. Data can be stored here in the form of magnetised dots.

Question 17

what is a smart card?

Answer 17

Input
modern credit cards and ID cards don’t use a magnetic strip. They have a tiny ‘chip’ of computer memory embedded inside them (are often referred to as smart cards.)

Question 18

what is a MICR reader?

Answer 18

Input
Magnetic Ink Character Recognition (MICR) is a technology that allows details from bank cheques to be read into a computer quickly and accurately.

Question 19

what is an OMR Scanner?

Answer 19

Input
Optical Mark Recognition (OMR) is a technology that allows the data from a multiple-choice type form to be read quickly and accurately into a computer.

Question 20

what is an OCR scanner?

Answer 20

Input
an Optical Character Recognition (OCR) is a software technology that can convert images of text into an actual text file that can then be edited

Question 21

what is a barcode reader?

Answer 21

Input

a numeric code represented as a series of lines

Question 22

what are 8 different types of sensors?

Answer 22

• temperature
• light
• pressure
• moisture
• water-level
• movement
• proximity
• switch or button

Question 23

what does the sensor of temperature detect?

Answer 23

temperature

Question 24

what does the sensor of light detect?

Answer 24

light/ dark

Question 25

what does the sensor of pressure detect?

Answer 25

pressure

Question 26

what does the sensor of moisture detect?

Answer 26

dampness/ dryness

Question 27

what does the sensor of water-level detect?

Answer 27

how full/ how empty a container is

Question 28

what does the sensor of movement detect?

Answer 28

movement nearby

Question 29

what does the sensor of proximity detect?

Answer 29

how close/ how far something is

Question 30

what does the sensor of switch or button detect?

Answer 30

if something is touching/ pressing it

Question 31

how do remote controls work?

Answer 31

they send data signals each time a button is pressed using infrared light or radio signals

Question 32

what is a CPR monitor?

Answer 32

Output | a monitor that displays text and image data passed to it by the computer

Question 33

what is a flat screen monitor?

Answer 33

Output | they are light in weight and they take up very little desk space

Question 34

what is a loud speaker?

Answer 34

Output | they are essential for applications such as music editing, video conferencing, watching movies, etc.

Question 35

what is a a dot matrix printer?

Answer 35

Output | it is a pattern of dots used when creating paper printout

Question 36

how are dot matrix printers often use?

Answer 36

it uses a continuous stationary: long continuous strips of paper

Question 37

what is the quality of a dot matrix printer?

Answer 37

it is poor and the printers are very noisy

Question 38

what is a inkjet printer?

Answer 38

it is a cheap, high quality, full colour printing form . They have a similar mechanism to dot matrix printer

Question 39

what is a laser printer?

Answer 39

Output they are complex and expensive printers, however, they are very cheap to use. Because of the paper it is faster to print this way

Question 40

what is a plotter?

Answer 40

Output | they draw on paper using a pen

Question 41

Output | what are 6 examples of actuators?

Answer 41

- light bulb or led - heater - cooling unit - motor - pump - buzzer/ Bell/ siren

Question 42

what does a light bulb or LED do?

Answer 42

Output | they create light

Question 43

what does a heater do?

Answer 43

Output | Increases temperature

Question 44

what does a cooling unit do?

Answer 44

Output | Decreases the temperature

Question 45

what does a motor do?

Answer 45

Output | spins things around