Computer Info

Question 1

LCD (monitor)

Answer 1

Liquid Crystal Display

Question 2

LED (monitor)

Answer 2

Light Emitting Diode

Question 3

Pixels

Answer 3

Resolution is represented by the number of pixels (or dots) the screen can display across each line and the number of lines that it can display. A common resolution is 1600×1200.

Question 4

Dot Matrix (Printer)

Answer 4

Dot matrix printers were among the first “personal printers.” They work by creating individual letters made up of a series of tiny dots by punching a ribbon with the ends of tiny wires. Because they are so adorable they are still used in industry from high-volume computer printing.

Punches a ribbon.

Question 5

Ink Jet (Printer)

Answer 5

A second type of printer is the ink jet printer. This printer sprays tiny droplets of ink particles on paper. This is the most commonly used type of personal printer with home computers.

Sprays tiny dots of ink.

Question 6

Laser (Printer)

Answer 6

This uses a beam of light to reproduce the image using a magnetic charge that affects dry toner. The toner is transferred to the paper and sealed with heat. These printers produce the highest quality images, so they are generally the most expensive types of printers.

Uses a beam of light.

Question 7

USB

Answer 7

Universal Serial Bus

The industry standard for connecting peripherals.

Serial = Ability to send only one bit of data at a time.

Question 8

Parallel

Answer 8

Port sending multiple bits at a time.

Question 9

Surge Protector

Answer 9

Protects the computer from power surges and automatically adjusts for variations in voltage.

Question 10

Hard drive

Answer 10

Also called hard disk; where are you store all your data; stores vast amounts of data

Question 11

bit

Answer 11

A single piece of information

Question 12

byte

Answer 12

8 bits

Question 13

megabyte

Answer 13

about 1M bytes

Question 14

gigabyte

Answer 14

1,024 magabytes

Question 15

Optical storage

Answer 15

CDs and DVDs

-information written to a disc, and read with a laser

Question 16

How much storage can a single CD have?

Answer 16

640 megabytes

Question 17

How much storage can a DVD have?

Answer 17

Optical disc with storage between 1GB and 16 GB.

Question 18

ROM

Answer 18

Read Only Memory

Question 19

Compact flash drive

Answer 19

A storage device used in digital cameras or digital video cameras. They allow information to be easily transferred from the device to the computer or printer.

Question 20

USB flash drive

Answer 20

A.K.A. as a “thumb drive.”

Simply plug into the USB port, which is now standard on nearly all computers. These are powerful data memory devices that usually have between 1 GB and 64 GB of memory capacity.

Question 21

Modem

Answer 21

Allows the computer to be connected to the outside world.

It is able to send and receive information and connect to the Internet.

The name modem comes from MO for modulator (converts digital data into a signal)and DEM for demodulator (converts the signal back into data).

Question 22

How is modem speed measured?

Answer 22

Kb/s or kilobits per second which equals to 1,024 bits of information transmitted per second. 1,000 or 1K

—And—

Mb/s or megabytes per second. 1,000,000 or 1M

Question 23

Cable Modem

Answer 23

A device that allows your computer to connect to the Internet and send and receive information via cable network instead of a phone line.
Much faster than analog modems (phone lines).
Since one byte = 8 bits, when you’re downloading at a speed of 10 KB/s, it is the same as 80 Kb/s.

Question 24

DSL Modem

Answer 24

Digital Subscriber Line
It uses copper telephone lines with special hardware attached at both ends and is able to relay data at much higher speeds than dial up. Typical speeds are 1.5 MB for slow DSL and 3-27 MB for standard.

Question 25

NIC

Answer 25

Network Interface Card

Plugs an Ethernet cable into the computer. One end of the cable attaches to a cable modem or a DSL modem and the other end plugs into the computer which connects you to the Internet.

Question 26

Wi-Fi

Answer 26

Wireless Internet. “Golden child of telecommunication,”

Wireless communication takes place via the airwaves, as opposed to cables or telephone lines.

Question 27

System Requirements

Answer 27

The system requirements are those individual specifications of your computer that would be necessary in order for a program to work on your system. 
Such as:
-operating system
-memory requirements
-hard disk 
-drive space requirements
-video card requirements
-networking requirements

Question 28

Computer Maintenance

Answer 28

1. Defragmenting:
   The defragmentation program is called disk defragmenter.
   Defragmenting recognizes broken pieces of files and then puts all the pieces together making them more accessible and efficient resulting in improved performance of the computer.
2. Deleting temporary files:
   Windows will alert when “low on disk space.” Click on Disk Cleanup and computer will look for temporary files. Place check marks beside the names and then OK to free up disk space.
3. Data Backup:
   Always back up data to an external device so if something happens to your computer so you don’t lose valuable data. To run the back up program open the control panel and select Backup your Computer under System and Security.

Question 29

Word processor

Answer 29

Program for manipulating text.

Question 30

Record

Answer 30

A set of fields in a database.

Question 31

Spreadsheet

Answer 31

Similar to a ledger.

Question 32

DSL

Answer 32

Digital Subscriber Line.

• Internet via phone line
• 1.5 a 7 mb/s

Question 33

Cable connection

Answer 33

Cable connection

• uses cable modem
• up to 6 MB/s
• always on and do not interfere with telephone use.

Question 34

Fiber Optic

Answer 34

Internet service provides online access through fiber optic cables.

• The future of connecting to the Internet.
• Does not interfere with phone use
• Provides speed of 12 to 20 MB/s on average
• Potential for virtually unlimited growth in the future.

Question 35

Satellite

Answer 35

A method of Internet connection.

• Always on; not dependent on cable or phone lines for communications.
• It can take 5 to 10 times as long as cable or DSL -350 to 500 KB/s
• Connections can be affected by bad weather.

Question 36

T1

Answer 36

A leased line connection

• capable of carrying data at 1.544 Mb/s
• Common for businesses and Internet access providers to be connected to the Internet;
• owned by major telephone network.

Question 37

Wi-Fi

Answer 37

Also known as wireless Internet.

• Comes in three speeds: 11 MB per second which is most common, 54 MB/s, 300 MB/s.
• Advantages are portability and flexibility.
• Hotspot refers to a public location; access the Internet via Wi-Fi connection.
• Free Internet access in coffee houses.
• Most vulnerable to hackers.

Question 38

Domain Name

Answer 38

Internet address and alphabetic form. This includes the name of the organization and the highest sub domain.

Question 39

URL

Answer 39

Uniform Resource Locator.

-An Internet address which tells a browser where to find an Internet resources.

Question 40

Hyperlink

Answer 40

A text or graphic on a website that can be selected or clicked with a mouse to open another webpage.