Unit 2B: Input Hardware

Question 1

3 types of INPUT hardware

Answer 1

1) Keyboard
2) Point Devices
3) Source Data Entry Devices

Question 2

Dumb and Intelligent Terminals

Answer 2

input/output devices with 0 processing
Intelligent: includes processing and memory

Question 3

Mark Recognition Readers

Answer 3

Magnetic Ink Character Recognition (MICR) - used on bank checks
Optical Mark Recognition (OMR) - scantron test sheet
Optical Character Recognition (OCR) - scans text and converts it to computer

Question 4

Frame-Grabber Video Card

Answer 4

1 frame at a time

Question 5

Full-Motion Video Card

Answer 5

30 frames per second

Question 6

Sensor

Answer 6

collects data from environment

Question 7

Biometric Input Devices

Answer 7

uses person’s characteristics for identification (fingerprint, face, iris)

Question 8

How do you get higher resolution?

Answer 8

Higher VRAM (and more pixels)

Question 9

Screen Clarity

Answer 9

Dot Pitch (dp) - space between pixels
Colour depth
Refresh Rate

Question 10

Difference between Impact and Non Impact Printers

Answer 10

impact touch the paper and are multilayered

Question 11

Laser Printer

Answer 11

produced in drum and transfered to paper
creates images with dots
Own RAM, ROM and CPU

Question 12

Dot-Matrix Printer

Answer 12

images with dots, impact

Question 13

Inkjet Printer

Answer 13

sprays droplets of ink on paper

Question 14

Photo Printer

Answer 14

colour dye

Question 15

Thermal Printer

Answer 15

uses heat (e.g. cash register)

Question 16

Thermal Wax-Transfer Printers

Answer 16

wax based ink

Question 17

Plotters

Answer 17

high quality 3D graphics

Question 18

Page Description Language

Answer 18

tells printer how to print page (font, etc.), post script is preferred

Question 19

Radio-Frequency Identification

Answer 19

identifying tag bearing a microchip which contains a code

Question 20

Name some Health issues related to tech

Answer 20

carpal tunnel syndrome
neck, back pain
eyestrain
electromagnetic fields can be harmful

Question 21

How is Binary Code Stored

Answer 21

Hard Drive
RAM
CD-RAM

Question 22

What happens when you turn on your computer?

Answer 22

What happens when you wake up in the morning?
computer sends electrical signals to each component

Question 23

Flat-Panel Display

Answer 23

2 plates of glass separated by a substance that manipulates light

Question 24

Liquid Crystal Display (LCD)

Answer 24

Optical properties of liquid crystal are altered to create images

Question 25

Plasma Display

Answer 25

- layer of gas between 2 glass plates - apply voltage to release ultraviolet light -> activate dots

Question 26

Cathode-ray tube (CRT)

Answer 26

out of style

Question 27

Multiple Screens

Answer 27

display split in 2 to view 2 things at once

Question 28

1D Bar Code

Answer 28

regular vertical stripes (16 ASCII)

Question 29

2D Bar Code

Answer 29

different sized rectangles (1-2 thousand)

Question 30

3D Bar Code

Answer 30

"bumpy code"

Question 31

What are the Benefits of Flash memory?

Answer 31

Does not have a solid state, so it will save and not break, nonvolatile

Question 32

Dot Pitch

Answer 32

space between pixels More pixels = more resolution (dots per inch (dpi))

Question 33

Colour Depth

Answer 33

# of bits in dot (pixel), higher = better

Question 34

Refresh Rate

Answer 34

Times per second that bits are recharged