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IT Fundamentals + > Chapter 2 > Flashcards

Chapter 2 Flashcards

1
Q

What are the four common display devices?

A

Cathode Ray Tube CRTs

Projectors

Flat screens

Touchscreens

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2
Q

Cathode Ray Tube (CRT)

A

an electron gun shoots a beam of electrons toward the back side of the monitor screen

use three guns, one for red, green, and blue image components,

each gun works only on dots of a certain color

screen is coated with special chemical dots called phosphors

each pixel is formed by a triangle of red, green, and blue phosphor called a triad

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3
Q

Dot pitch:

A

the measurement between triads on the display.

Expressed in millimeters or dots per inch

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4
Q

Resolution:

A

how many pixels are used to draw the screen

indicate how many rows and columns of pixels are used to draw the screen

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5
Q

What is an advantage of higher resolution screens?

A

more information can be displayed in the same screen area

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6
Q

What is a disadvantage of higher resolution screens?

A

the same objects and text displayed at a higher resolution appear smaller and might be harder to see

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7
Q

Liquid Crystal Display Monitor (LCD):

A

has two polarized filters, between which are liquid crystals

light must pass through both filters and crystals

by applying current to the crystal it causes it to twist so that it matches the angle of the second crystal and allows the light to pass through

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8
Q

Light-Emitting Diode Monitor (LED):

A

are just LCD panels with light emitting diodes

rival plasma displays in clarity and variations in luminance

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9
Q

Plasma display panels (PDP):

A

create a cloud from inert gas, such as neon, by placing electrodes in front of and behind sealed chambers full of gas and vaporized mercury

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10
Q

Full Name; Year Introduced; # of Pins in Connector; Analog or Digital:

VGA

A

Video Graphics Array; 1987; 15-pins; Analog

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11
Q

Full Name; Year Introduced; # of Pins in Connector; Analog or Digital:

Digital Visual Interface (DVI):

A

Digital Visual Interface; 1999; 24; Both Analog and Digital

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12
Q

Full Name; Year Introduced; # of Pins in Connector; Analog or Digital:

HDMI

A

High-Definition Multimedia Interface; 2002; 19; Digital

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13
Q

Year Introduced; # of Pins in Connector; Analog or Digital:

DisplayPort:

A

2008; 12; Both Analog and Digital

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14
Q

What are some of the types of external storage?

A

Flash Drives

Memory Cards

Secure Digital (SD

External Hard Drive

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15
Q

What are the three prominent standards of memory cards?

A

Smart Media

Compact Flash

Secure Digital (SD)

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16
Q

Network-attached storage (NAS) device:

A

attached to the network, allows users access to storage space

can hold up to four hard drives, some hold more or less

allow you to replace failing hard drives without shutting down

contains its own operating system

good device if you are running a small office and need additional centralized storage

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17
Q

What are four types of connectors that you’re most likely to see with external hard storage devices?

A

USB

eSATA

FireWire

Thunderbolt

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18
Q

Year; Speed:

USB 1.1

A

1998; 12 Mbps

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19
Q

Year; Speed:

USB 2.0

A

2000; 480 Mbps

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20
Q

Year; Speed:

USB 3.0

A

2008; 5 Gbps

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21
Q

Year; Speed:

USB 3.1

A

2013; 10 Gbps

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22
Q

Year; Speed:

USB 3.2

A

2017; 20 Gbps

23
Q

External SATA (eSATA) connector:

A

can support up to 15 devices on a single bus

does not provide power

24
Q

eSATA Year; Speed:

Revision 1.0

A

2003; 1.5 Gbps

25
Q

eSATA Year; Speed:

Revision 2.0

A

2005; 3.0 Gbps

26
Q

eSATA Year; Speed:

Revision 3.0

A

2009; 6.0 Gbps

27
Q

FireWire:

A

high-speed digital connection

found a niche home with digital video cameras

can connect up to 63 devices on a single bus

28
Q

Year; Speed:

Thunderbolt

A

2011; 10 Gbps

29
Q

Year; Speed:

Thunderbolt 2

A

2013; 20 Gbps

30
Q

Year; Speed:

Thunderbolt 3

A

2015; 40 Gbps

31
Q

Registered Jack (RJ)-45

A

an ethernet connector

sometimes called Cat 5 or Cat 6 (Category)

32
Q

What are the three types of wireless connection?

A

Wi-Fi

Bluetooth

Radio frequency (RF)

33
Q

Registered Jack (RJ)-11

A

a telephone connector; must have a modem for internet

34
Q

QWERTY

A

The most common configuration for Latin Script on keyboar

35
Q

DVORAK:

A

an alternative to QWERTY

designed to place more commonly used letters in better spots, increasing your typing speed

36
Q

What are the five types of pointing devices in use today?

A

Mouse

Touchpad

Joystick

Stylus Pen

Trackball

37
Q

Joysticks:

A

used in aviation before computers were invented

specialized computers used joysticks in the 1940s

a stick and a button or two to indicate action

38
Q

Trackball

A

introduced in 1946

inverted mouse with a ball

you roll it around with your thumb and/or fingers

39
Q

What the the two most common printer technologies?

A

Inkjet

Lasers

40
Q

Inkjet printers:

A

the most popular choice

sprays ink on the page to form the image

41
Q

CMYK cartridges:

A

All ink in one cartridge

Cyan, Magenta, Yellow, Black

42
Q

Laser printer:

A

bigger, faster, and more expensive than inkjet printers

use a dry powdery plastic resin called toner which is stored in a replaceable cartridge

the image is formed on the printers drum and jumps off onto the paper

four separate toner cartridges (CYMK) colors

43
Q

Serial Connections:

A

when computers send data serially, they send it 1 bit at a time

44
Q

Parallel Connections:

A

sending data 8 bits at a time over eight separate wires (1 for each bit)

45
Q

What are the two choices when connecting a printer to a network?

A

Network cable (typically RJ-45)

Wireless networking

46
Q

What are the steps for a installing an internal device?

A

Always make sure that the computer is powered off

Remove the component you are replacing

Identify the slot or connection you will use for the new device

Insert the new device. Make sure to connect power if it requires a direct connection to the power supply

Turn the computer back on

47
Q

Plug-and-play:

A

When the OS automatically detects the new device and installs the proper driver

48
Q

Full Name; Year Introduced; # of Pins in Connector; Analog or Digital:

MDP

A

Mini DisplayPort; 2008; 20; Both Analog and Digital

49
Q

Year Introduced:

Thunderbolt

A

2011

50
Q

Year Released; Primary Uses:

PS/2;

A

1987; Keyboards and mice

51
Q

Year Released; Max Speed; Primary Uses:

Parallel

A

1970; 20 Mbps; Printers

52
Q

Year Released; Max Speed; Primary Use

Serial (RS-232)

A

1962; 115 Kbps; Modem, printers, mice, control console for server and router management

53
Q

Year Released; Max Speed; Primary Uses:

RJ-45

A

1976; 10 Gbps; Network cards

54
Q

Year Released; Max Speed; Primary Uses:

RJ-11

A

1976; 56 Kbps; Modems

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