CoSci ch 2 midterm
Can I add more USB ports to my computer in order to connect multiple peripheral devices? a) A port is an interface through which peripheral devices are connected to the computer. You can add extra ports through means such as expansion cards or expansion hubs. b) A port is an interface through which peripheral devices are connected to the computer. You can add extra ports through means such as flash cards. c) A port in an interface through which peripheral devices are connected to the computer. You can add extra ports through means such as routers and switches. d) A port is an interface through which peripheral devices are connected to the computer. You can add extra ports through adding serial ports.
a
How do LCD monitors work? a) A fluorescent panel at the back of the monitor generates light waves. When electric current passes through the solution the crystals move around, blocking light waves generated or letting them shine through, creating images on the screen. b) An LCD monitor is a grid made of millions of illuminated pixels, which create the images on the monitor. The pixels are illuminated by an electron beam that passes back and forth across the back of the screen very quickly so that the pixels appear to glow continuously. c) All LCD monitors use light-emitting diode (LED) technology, in which an electrical current passes through the liquid crystal solution and charges groups of pixels, either in a row or a column. This causes the screen to brighten with each pass of electrical current and subsequently fade. d) LCD monitors use organic compounds that produce light when exposed to an electric current.
a
What else can you tell me about inkjet printers and how they work? a) Inkjet printers work by spraying tiny drops of ink onto paper. They offer quiet, fast, and high-quality printouts and are affordable. They can also print images that look like professional-quality photos. b) Inkjet printers work by using static electricity to signal to the printer where to print ink. They offer faster printout times and higher quality printouts than do laser printers, although they are more expensive to purchase. c) Inkjet printers work by melting wax-based ink onto ordinary paper. They are also emerging as a popular technology for mobile and portable printing and many models feature wireless infrared technology for complete portability. d) Inkjet printers combine the functions of a printer, scanner, copier, and fax into one machine.
a
What kind of port is needed to connect an LCD monitor to a notebook computer? a) You will want an HDMI port, which also allows you to connect a game console. b) You will want an Ethernet port, which allows you to transfer data at 1,000 Mbps. c) You will want a USB 3.1 port, which is a type of video port. d) You will want a serial port.
a
expansion cards (or adapter cards)
a circuit board with specific functions that augment the computer's basic functions and provide connections to other devices; examples include the sound card and the video card
CMYK
a color model in which all colors are described as a mixture of four base colors (Cyan, magenta, yellow, and black)
display screen (monitor)
a common output device that displays text, graphics, and video as soft copies (copies that can be seen only on screen)
high definition multimedia interface (HDMI) port
a compact audio-video interface standard that carries both high-definition video and uncompressed digital audio
desktop computer
a computer that is intended for use at a single location. a desktop computer consists of a case that houses the main components of the computer, plus peripheral devices.
computer
a data-processing device that gathers, processes, outputs, and stores data and information
all-in-one computer
a desktop system unit that houses the computer's processor, memory, and monitor in a single unit
all in one printer
a device that combines the functions of a printer, scanner, copier, and fax
binary digit (bit)
a digit that corresponds to the on and off states of a computer's switches. a bit contains a value of either 0 or 1
flash drive (jump drive, USB drive, or thumb drive)
a drive that plugs into a universal serial bus (USB) port on a computer and that stores data digitally.
flash memory card
a form of portable storage; this removable memory card is often used in digital cameras, smartphones, video cameras, and printers
external hard drives
a hard drive that is enclosed in a protective case to make it portable; the drive is connected to the computer with a data transfer cable and is often used to back up data
internal hard drive
a hard drive that resides within the computer's system unit and that usually holds all permanently stored programs and data
keyboard
a hardware device used to enter typed data and commands into a computer
input device
a hardware device used to enter, or input, data (text, images, and sounds) and instructions (user responses and commands) into a computer. some input devices are keyboards and mice
2-in-1 PC
a laptop computer designed specifically to work with handwriting recognition technology
digital video (or versatile) discs (DVDs)
a method of optical storage for digital data that has greater storage capacity than compact discs
Blu-ray discs (BDs)
a method of optical storage for digital data, developed for storing high-definition media. it has the largest storage capacity of all optical storage options
compact disc (CD)
a method of optical storage for digital data; originally developed for storing digital audio
green computing (green IT)
a movement that encourages environmentally sustainable computing (or IT)
inkjet printers
a nonimpact printer that sprays tiny drops of ink onto paper
connectivity port
a port that enables a computing device to be connected to other devices or systems such as networks, modems, and the Internet
ethernet port
a port that's slightly larger than a standard phone jack and that transfers data at speeds of up to 10,000 Mbps; used to connect a computer to a DSL or cable modem or to a network
hibernate
a power-management mode that saves the current state of the current system to the computer's hard drive
cloud storage
a service that keeps files on the internet rather than storing files solely on a local device
distributed (grid) computing
a software system in which components located on networked computers interact to achieve a common goal
drive bay
a special shelf inside a computer that is designed to hold storage devices
embedded computer
a specially designed computer chip that resides inside another device, such as a car. these selfcontained computer devices have their own programming and typically neither receive input from users nor interact with other systems
global positioning system (GPS)
a system of 21 satellites (plus 3 working spares) built and operated by the US military that constantly orbit the earth. the satellites provide information to GPS- capable devices to pinpoint locations on the earth
bluetooth technology
a type of wireless technology that uses radio waves to transmit data over short distances (approximately 3-300 feet depending on power); often used to connect peripherals such as printers and keyboards to computers or headsets to cell phones
gigabyte (GB)
about a billion bytes
cursor
an onscreen icon (often showed by a vertical bar or an arrow) that helps the user keep track of exactly what is active on the display screen
interactive white board
an output device that projects the computer's display onto the interface white board's surface
assistive (adaptive) technology
any device, software feature, or app that is designed to improve the functional capabilities of individuals with disabilites
Chromebook
any laptop or tablet running the Chrome OS as its operating system
hardware
any part of a computer or computer system you can physically touch
) What exactly is a byte? a) A byte is a term that is short for binary digit. 8 bytes hold about one letter, one number, or one special character. b) A byte is a string of 0s and 1s that represents special characters such as the @ sign in a computer. c) A byte is a term used to represent eight bits of data. One byte can hold about one letter, one number, or one special character. d) A byte is one bit.
b
How many bytes are there in a megabyte? a) A megabyte is approximately 1,000 bytes. b) A megabyte is about a million bytes. c) A megabyte is about a billion bytes. d) A megabyte is more than one quadrillion bytes.
b
If I have a 1 TB internal hard drive, will I also need any additional storage devices? a) No, an internal hard drive with 1 TB of space has enough room to store all of your data, and it's easily portable. b) Yes, you might want to purchase an external hard drive for better portability or to back up data on your internal hard drive. c) Yes you should because an internal hard drive with 1 TB of space hardly has enough space to hold all of the information in one library book. d)No, an internal hard drive with 1 TB of space is not enough; 256 GB would be better.
b
What about laser printers then? Are they ever better than inkjet printers? b) in a laser printer, each ink nozzle contains a crystal at the back of the ink reservoir that receives an electrical charge, causing the ink to vibrate and drop out of the nozzle. The advantage of laser printers is that they are less expensive to buy than a similar inkjet printer. b)A laser printer works by using static electricity to signal to the printer where to print ink. The advantage of laser printers is their faster printout times and high-quality printouts. c)A laser printer combines the functions of a printer, scanner, copier, and fax into one machine. The advantage of laser printers is their space-saving convenience. d) Inkjet printers are affordable and replacement cartridges are less expensive.
b
What is the fastest port on the market? a) A solid-state port. b) The Thunderbolt port. c) A USB 3.1 port. d) Serial Port.
b
what type of printer heats toner to adhere it to the paper
b
which of the following can be both an input device and an output device? a)keyboard b)display screen c)laser printer d)mouse
b
I know that soon I'll need a printer too. What choices do I have? a) Inkjet printers, laser printers, and thermal bubble printers are the three main types of printers available for home computers. b) Inkjet printers, laser printers, and 3D printers are the three main types of printers available for computers. c) Inkjet printers and laser printers are the two main types of printers available for home computers. d) Inkjet printers, laser printers, and plotters are the three main types of printers available for home computers.
c
What does an internal hard drive do? a)The internal hard drive stores data in a portable format. b)The hard drive is the computer's volatile memory. That means that data stored on the hard drive is erased when you shut off the computer. c) The hard drive is the computer's permanent memory. Data stored on the hard drive is not erased when you shut off the computer. d)The hard drive resembles a floppy disk drive but has a slightly wider opening
c
What factors determine the processing power of a CPU? a) Processing power is only determined by the number of tasks the main chip in the computer can perform in one second. b) Processing power is measured by Hz, which represents the number of cores in the processor. c) Processing power is determined by the speed of the processor, the number of cores, as well as other factors such as cache memory and FSB. d) Processing power is determined by the amount of RAM in the system.
c
What is a gigabyte? a) A gigabyte is about one million bytes. b) A gigabyte is approximately 1,000 bytes. c) A gigabyte is about one billion bytes. d) gigabyte is about one trillion bytes.
c
which of the following is one of the four major functions of a computer? a. indexing b. verification c. processing d. handling
c
Finally, what do I need to keep in mind when I buy a printer? a)When choosing a printer, keep in mind the amount of colors it can print. b)When choosing a printer, keep in mind its aspect ratio and dpi. c)When choosing a printer, keep in mind whether the laser printer uses the thermal bubble or 3D process. d).When choosing a printer, keep in mind its printing speed, its resolution, its color output capabilities, and the cost of consumables.
d
If you have an external hard drive, is a flash drive needed? a) You might want a flash drive if you want portability and need to store up to 500 GB. b) You might want a flash drive if you want portability and need to store up to 600 GB. c) You might want a flash drive if you want portability and need to store up to 356 GB. d) You might want a flash drive if you want portability and need to store up to 256 GB.
d
What does a kilobyte indicate? a) A kilobyte (KB) is a unit of measure. It equals about 1 million bytes. b)A kilobyte (KB) is a unit of measure. It equals about 100 bytes. c) A kilobyte (KB) is a unit of measure. It equals about 1 trillion bytes. d) A kilobyte (KB) is a unit of measure. It equals about 1,000 bytes.
d
What's important to consider when buying a new monitor? a) If you're buying a new monitor, your only choice is an LCD monitor, and they are all the same, so it doesn't matter which one you pick. b) Actually, if your computer came with one type of monitor you need to make sure you buy the same type if you're replacing it. c) If you are buying a new monitor, make sure you get the biggest one you can afford as they always have the highest resolution. d) If you are buying a new monitor, consider its size, resolution, and brightness.
d
the number of pixels that can be displayed on the screen at one time is known as what? a)pixel density b)viewing angle c)screen resolution d) color depth
d
which of the following statements is TRUE? a) smartphones have more computing power than desktop computers b)smartphones do not contain a CPU c)all cell phones are now smartphones d) smartphones are considered a type of computer
d
information
data that has been organized or presented in a meaningful fashion; the result or output that users require at the end of a job
game controllers
devices such as joysticks, game pads, and steering wheels are considered input devices because they send data to computing devices
byte
eight binary digits (bits)
ergonomics
how a user sets up his or her computer and other equipment to minimize risk of injury or discomfort
feature phones
inexpensive cell phones with modest processors, simple interfaces, and often, no touch screens
data
numbers, words, pictures, or sounds that represent facts, figures, or ideas; the raw input that users have at the start of a job
gigahertz (GHz)
one billion hertz
earbuds
plug into the same jack on your computing device to which external speakers connect
cloud-ready printer
printer that connect directly to the internet and register themselves with google cloud print
headphone
same as earbuds
intelligent personal assistants
software designed to perform tasks or services for individuals
hard disk drive (HHD or hard drive)
the computer's nonvolatile, primary storage device for permanent storage of software and documents
electrical switches
the devices inside the computer that are flipped between the two states of 1 and 0, signifying on and off
binary language
the language computers use to process data into information, consisting of only the values 0 and 1
central processing unit (CPU or processor)
the part of the system unit of a computer that is responsible for data processing; it is the largest and most important chip in the computer. It controls all the functions performed by the computer's other components and processes all the commands issues to it by software instructions
cold boot
the process of starting a computer from a powered-down or off state
application software
the set of programs on a computer that helps a user carry out tasks such as word processing, sending e-mail, balancing a budget, creating presentations, editing photos, taking an online course, and playing games
digital convergence
the use of a single unifying device to handle media, internet, entertainment, and telephony needs; expresses in the range of devices now on the market
aspect ratio
the width-to-height proportion of a monitor *traditionally 4:3, but newer monitors are 16:9 for HD video
flatbed scanners
they create a digital image, which you can then print, save, or e-mail
integrated circuits (or chips)
tiny regions of semiconductor material that support a huge number of transistors
3D printer
used to print three-dimensional models
