The type of hard disk that typically connects to a usb or thunderbolt port on the system unit.

Inhaltsverzeichnis Show

Which is not a mass storage device?
Do hard disks use tracks?
Which of the following is referred to as secondary storage?
Which is not an example of solid

Glossary
Chapter 2
64-bit processor	A microprocessor with registers, address bus, and a data bus that hold 64 bits of data, in contrast to 32-bit processors that hold 32 bits of data
Access time	The estimated time for a storage device to locate data on a disk, usually measured in milliseconds
All-in-one computer	A desktop computer form factor in which the system unit and touchscreen are integrated into a single unit
Benchmarks	A set of tests used to measure computer hardware or software performance
BIOS	A small set of basic input/output system instructions stored in ROM
Blu-ray	A high-capacity storage technology that stores up to 25 GB per layer on Blu-ray discs (BDs)
Blue screen of death	An error condition in which a PC "freezes" and displays a black screen (blue screen prior to Windows Vista); usually turning the computer off and turning it on again clears the error
Bootstrap loader	A program that automatically runs when a computer is first turned on in order to load the operating system
Capacitors	Electronic circuit components that store an electrical charge; in RAM, a charged capacitor represents an "on" bit, and a discharged one represents an "off" bit
Card reader	A device that can be used to read and record data on solid stage storage devices, such as flash memory cards
CD	(Compact Disc) An optical storage medium used to store digital information. CD-ROMs are read only. CD-Rs and CD-RWs can be used to record data.
CISC	(Complex Instruction Set Computer) A general-purpose microprocessor chip designed to handle a wider array of instructions than a RISC chip
Color depth	The number of bits that determines the range of possible colors that can be assigned to each pixel. For example, an 8-bit color depth can create 256 colors.
CPU cache	Special high-speed memory providing the CPU rapid access to data that would otherwise be access from disk or RAM
Data bus	An electronic pathway or circuit that connects the electronic components (such as the processor and RAM) on a computer's motherboard
Data transfer rate	The amount of data that a storage device can move from a storage medium to computer memory in one time unit, such as one second
Dedicated graphics	Circuitry for graphics that is supplied on an expansion card rather than integrated into the main system board of a digital device
Desktop computer	A computer that is small enough to fit on a desk and built around a single microprocessor chip
Dot matrix printer	A printer that creates characters and graphics by striking an inked ribbon with small wires called "pins," generating a fine pattern of dots
Dot pitch	(dp) The diagonal distance between colored dots on a display screen. Measured in millimeters, dot pitch helps to determine the quality of an image displayed on a monitor.
Double layer DVD	A DVD that essentially stacks data in two different layers on the disk surface to store 8.5 GB, twice the capacity of a standard DVD.
Drive bays	Areas within a computer system unit that can accommodate additional storage devices
Duplex printer	A printer that prints on both sides of the paper in a single pass
Duty cycle	A measurement of how many pages a printer is able to produce per day or month
DVD	(Digital Video Disc or Digital Versatile Disc) An optical storage medium similar in appearance and technology to a CD but with higher storage capacity
DVI	(Digital Visual Interface) A standard type of plug and connector for computer display devices
Dynamic RAM	(DRAM) Random access memory that requires a power source to hold data; used as main memory on most computers
EEPROM	(Electrically Erasable Programmable Read-Only Memory) A type of non-volatile storage typically used in personal computers to store boot and BIOS data
Enhanced media player	Handheld devices designed to play music, but with enhanced features, such as a browser and apps
eSATA	A standard for high-speed ports, plugs, and connectors typically used to connect external hard drives to computers
Expansion bus	The segment of the data bus that transports data between RAM and peripheral devices
Expansion card	A circuit board that is plugged into a slot on a computer motherboard to add extra functions, devices, or ports
Expansion port	A socket into which the user plugs a cable from a peripheral device, allowing data to pass between the computer and the peripheral device
Expansion slot	A socket or "slot" on a PC motherboard designed to hold a circuit board called an expansion card
FireWire	A standard for fairly high-speed ports, plugs, and connectors typically used to connect external storage devices, and for transferring data from cameras to computers
Floppy disk	A removable magnetic storage medium, typically 3.5" in size, with a capacity of 1.44 MB.
Form factor	The configuration of a computer's system unit; examples include tower, mini-tower, and cube
Front side bus	(FSB) The data bus that carries signals between the CPU and RAM, disks, or expansion slots
Game controllers	Devices such as joysticks wands, and steering wheels, used to control on-screen action in computer games
Gigahertz	(GHz) A measure of frequency equivalent to one billion cycles per second
Graphics card	A circuit board inserted into a computer to handle the display of text, graphics, animation, and videos. Also called a video card or graphics board.
Graphics processing unit	(GPU) A microprocessor dedicated to rendering and displaying graphics on personal computers, workstations, and videogame consoles
Hard disk drive	A computer storage device that contains a large-capacity rigid storage surface sealed inside a drive case. Typically used as the primary storage device in personal computers.
Hard disk platter	The component of a hard disk drive on which data is stored. It is a flat, rigid disk made of aluminum or glass and coated with a magnetic oxide
HDMI	(High-Definition Multimedia Interface) A standard type of plug and connector for computer display devices
Head crash	A collision between the read-write head and the surface of the hard disk platter, resulting in damage to some of the data on the disk
Home computer system	A personal computer designed for use with mainstream computer applications such as Web browsing, e-mail, music downloads, and productivity software
Hot-plugging	The ability of a component, such as a USB flash drive, to connect or disconnect from a computer while it is running; Also referred to as hot-swapping
Ink jet printer	A non-impact printer that creates characters or graphics by spraying liquid ink onto paper or other media
Integrated graphics	Circuitry for graphics processing that is integrated into the mainboard rather than as an expansion card
Lands	Non-pitted surface areas on a CD that represent digital data. (See also pits.)
Laptop Computer	A small, lightweight, portable computer that usually runs on batteries. Sometimes called a notebook computer.
Laser printer	A printer that uses laser-based technology, similar to that used by photocopiers, to produce text and graphics
LCD display	(Liquid Crystal Display) Technology used for flat panel computer screens typically found on notebook computers
LED display	(Light-Emitting Diode display) A display device that either uses LEDs to produce an image on the screen, or and LCD display that uses LEDs as backlighting
Linux platform	A computer that is running the Linux operating system
Mac platform	A family or category of Macintosh-compatible personal computers designed and manufactured by Apple Computer
Magnetic storage	A technology for recording data onto disks or tape by magnetizing particles of an oxide-based surface coating
Megahertz	(MHz) A measure of frequency equivalent to one million cycles per second
Memory card	A small, flat, solid state storage medium, frequently used to store data on cameras and handheld devices
Microprocessor clock	A timing signal that sets the pace for executing instructions in a microprocessor
Mouse	An input device that allows the user to manipulate objects on the screen by clicking, dragging, and dropping
Multi-core processor	A microprocessor that contains circuitry for more than one processing unit
Non-volatile	Any electronic component that does not require a constant supply of power to hold data
Optical storage	A technology that records data as light and dark spots on a CD, DVD, or other optical media
Overclocking	Forcing a computer component, such as a microprocessor, to run at a higher speed than intended by the manufacturer
Parallel processing	The simultaneous use of more than one processor to execute a program
PC platform	A family of personal computers that use Windows software and contain Intel-compatible microprocessors
Peripheral device	A component or equipment, such as a printer, that expands a computer's input, output, or storage capabilities
Pipelining	A technology that allows a processor to begin executing an instruction before completing the previous instruction
Pits	Spots on a CD that are "burned" onto an optical storage medium to represent digital data
Pixels	(Short for picture element) The smallest unit in a graphic image. Computer display devices use a matrix of pixels to display text and graphics.
Pointing device	An input device, such as a mouse, trackball, pointing stick, or trackpad, that allows users to manipulate an on-screen pointer and other screen-based graphical controls
Portable computer	Any type of computer, such as a notebook computer, that runs on batteries and is designed to be carried from one location to another; also called a mobile computer
PostScript	A printer language, developed by Adobe Systems, which uses a special set of commands to control page layout, fonts, and graphics
Power surge	A spike in electrical voltage that has the potential to damage electronic equipment such as computers
Printer Command Language	(PCL) A standard for formatting codes embedded within a document that specify how a printer should format each page
RAM	(Random Access Memory) Computer memory circuitry that holds data, program instructions, and the operating system while the computer is on
Random access	The ability of a storage device (such as a disk drive) to go directly to a specific storage location without having to search sequentially from a beginning location
Read-only technology	Storage media that can only be read from, but not recorded on
Read-write head	The mechanism in a disk drive that magnetizes particles on the storage disk surface to write data, or senses the bits that are present to read data
Recordable technology	The devices and standards that allow computers to write data permanently on CDs and DVDs, but does not allow that data to be changed once it has been recorded
Response rate	In relation to display technology, response rate is the time it takes for one pixel to change from black to white then back to black
Rewritable technology	The devices and standards that allow users to write data on a storage medium and then change that data
RISC	(Reduced Instruction Set Computer) A microprocessor designed for rapid and efficient processing of a small set of simple instructions
ROM	(Read-Only Memory) Refers to one or more integrated circuits that contain permanent instructions that the computer uses during the boot process
Safe Mode	A menu option that appears when Windows is unable to complete the boot sequence. By entering Safe Mode, a user can gracefully shut down the computer, then try to reboot it.
Screen resolution	The density of the grid used to display text or graphics on a display device; The greater the horizontal and vertical density, the higher the resolution
Sequential access	A characteristic of data storage, usually on computer tape, that requires a device to read or write data one record after another, starting at the beginning of the medium
Serial processing	Processing of data one instruction at a time, completing one instruction before beginning another
Smartphone	A cellular phone that has a high resolution, color screen, a browser, and the ability to run apps
Solid state drive	Data storage device that utilizes erasable, rewritable circuitry
Solid state storage	A technology that records data and stores it in a microscopic grid of cells on a non-volatile, erasable, low-power chip
Storage density	The closeness of the particles on a disk surface. As density increases, the particles are packed more tightly together and are usually smaller.
Storage device	A mechanical apparatus that records data to and retrieves data from a storage medium
Storage medium	The physical material used to store computer data, such as a floppy disk, a hard disk, or a CD-ROM
Surge strip	A device that filters out electrical spikes that could damage computer equipment
System unit	The case or box that contains the computer's power supply, storage devices, main circuit board, processor, and memory
Tablet computer	A small, portable computer with a touch-sensitive screen that can be used as a writing or drawing pad
Thunderbolt	A high-speed expansion port typically used to connect external storage devices to a computer
Touch screen	A display device that accepts input from being touched with a stylus or fingertip
Tower case	A desktop computer form factor that stores the system board and storage devices in a tall system unit with detached display and keyboard
Trackpad	A touch-sensitive surface on which you slide your fingers to move the on-screen pointer
UPS	(Uninterruptible Power Supply) A battery-backed device designed to provide power to a computer during blackouts, brownouts, or other electrical disruptions
USB	(Universal Serial Bus) A high-speed bus commonly used for connecting peripheral devices to computers
USB flash drive	A portable solid state storage device nicknamed "pen drive" or "keychain drive" that plugs directly into a computer's USB port
USB hub	A device that provides several auxiliary USB ports
VGA	(Video Graphics Array) A screen resolution of 640 x 480
Viewing angle width	The angle at which you can clearly see the screen image from the side
Virtual keyboard	A keyboard that is displayed on a touch screen and used for input on smartphones and tablet computers
Virtual memory	A computer's use of hard disk storage to simulate RAM
Volatile	A term that describes data (usually in RAM), which can exist only with a constant supply of power
Word size	The number of bits that a CPU can manipulate at one time, which is dependent on the size of the registers in the CPU, and the number of data lines in the bus

Which is not a mass storage device?

Detailed Solution. The correct answer is Modem. A modem is not a storage device. Modem stands for modulator-demodulator.

Do hard disks use tracks?

Hard disks use tracks, sectors, and cylinders to store and organize files. RAID connects several inexpensive hard-disk drives to one another.

Which of the following is referred to as secondary storage?

Initially, it referred to a class of non-volatile media that could store data without always being connected to power. Secondary storage might include hard disk drives (HDDs), solid-state drives (SSDs), optical disks, USB flash drives, floppy disks or other devices.

Which is not an example of solid

The correct answer is DVD ROM. DVD ROM is not an example of solid-state storage device. Solid-state storage devices are the type of computer storage devices that store data electronically. It has no moving parts (no reels of tape, no spinning discs, no laser beams, etc.).

The type of hard disk that typically connects to a usb or thunderbolt port on the system unit.

Which is not a mass storage device?

Do hard disks use tracks?

Which of the following is referred to as secondary storage?

Which is not an example of solid

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