Virtual memory is a portion ofa storage medium functioning asadditional ROM

RAID is redundant array of independent disks

Formatting is the process of dividing the disk into tracks andsectors

Access time is the amount of time it takes the processor to readfrom memory

An SSD (Solid state drive_ is a flash memory storage deivec thatcontains it own processor tomanage its storage

NAS is network attached storage

A computer chip contains integrated circuits

Network attached storage (NAS) is a server that is placed on anetwork with the solepurpose of providing storage to users, computers, and devicesattached to the network

A memory card is a non removable flash memmory storagedevice that you insert andremove from a slot in computer, mobile device or card reader/writer

The case contains and protects the electronics of the computerand mobile device fromdamage

Read-only memory (ROM) refers to memory chips storingtemporary data and instructions

The motherboard is not the main circuit board of the computer

Flash memory cannot be erased electronically and rewritten

A memory card is a removable flash memory storage device thatyou insert and removefrom a slot in a computer, mobile device, or card reader/writer

A head disk, also called a head disk drive (HDD) contains oen ormaore inflexible, circularplatters that use magnetic particles to store data, instructions andinformations

Virtual memory is a portion ofa storage mediun functioning asadditional RAM

The processor, also called the central processing unit (CPU),interprets and carries out thebasic instructions that operate a computer

A USB port, short for universal serial bus port

A connector joins a cable to a port

A wearable device or wearable is a small, mobile computing devicedesigned to be worn by a consumer

Resolution is the number of horizontal and vertical pixels in a display

A digital camera is a mobile device that allows users to take photos andstore the photographed images digitally

A smartphone is a phone that usually includes a calendar, an addressbook, a calculator, a notepad, games, browser, and numerous other apps

A supercomputer is the fastest, most powerful computer – and the most inexpensive

A server farm is a network of several severs together in a singlelocation

A mobile computer is a portable personal computer, designed so that auser easily can carry it from place to place

Multimedia refers to any social network that combines text with media

A web address also called URL

Ergonomics incorporates comfort, efficiency, and safetyin the design of the workplace

A backup is a duplicate of a file, program, or media thatcan be used if the original is lost, damaged, or destroyed

A file compression tool shrinks the size of a file(s)

A disk defragmenter is a tool that reorganizes the files and unused space on a computer's hard disk so that the operating system accesses data more quickly and programsr un faster

A cookie is a small text file that a web server stores on your computer

Intellectual property refers to the right of individuals and companies to deny or restrict the collection, use, and dissemination of information about them

Information privacy refers to the right of individuals and companies to deny of restrict the collection, use, and dissemination of information about them

A 3D printer uses a process called additive manufacturing to create an object by adding material to three-dimensional object, one horizontal layer at a time

Output is data that has been processed into useful form

A QR code stores information in both a vertical and horizontal direction

A bar code reader, also called a bar code scanner uses laser beams to read barcodes

A videoconference is a meeting between two or more geographically separatedpeople

Voice recognition, also called speech recognition, is the computer of mobiledevice’s capability of distinguishing spoken words

A touchpad is a touch-sensitive display

A touch screen is a touch-sensitive display

Ergonomics incorporates, efficiency, and safety in the design of the workplace

An ergonomic keyboard has a design that reduces the chance of repetitive straininjuries of wrist and hand

Input is any data and instructions entered into the memory of a computer

HTML comments start with <!—and end with →

Inline elements are normally displayed without starting a new line

Access time is the amount of tỉme it takes the processorto read from memory

CMOS technology uses battery power to retaininformation when when the power to the computer is off

Flash memory can be erased electronically and rewritten

Read-only memory (ROM) refers to memory chips storing permanent data and instructions

Memory cache speeds the processes of the computerbecause it stores frequently used instructions and data

RAM chips usually reside on a memory module and areinserted into memory slots

RAM is example of volatile memory :

RAM is example of nonvolatile memory :

Nonvolatile memory does not lose contents when poweris removed

Volatile memory loses its contents when power is turned off:

Each location in memory has an address

Memory consists of electronic components that storeinstructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data

The system clock controls the timing of all computer operations:

The processor contains registers, that permanently holddata and instructions

The processor contains registers, that temporarily hold data and instructions :

The control unit: performs arithmetic, comparison, andother operations

The arithmetic logic unit (ALU) performs arithmetic,comparison, and other operations

The arithmetic logic unit is the component of the processor that directs and coordinates most of the operations in the computer

The control unit is the component of the processor thatdirects and coordinates most of the operations in the computer:

System development activities are grouped into phases,and is called the system development life cycle (SDLC)

A report writer allows users to design a report on thescreen, retrieve data into the report design,and then display or printthe report

A form is a window on the screen that provides areasfor entering or modifying data in a database

Structured Query Language (SQL) is a popular query language that allows users to manage,update, and retrieve data

A data model defines how users view the organization of the data

File maintenanee refers to the procedures that keep data current:

A secondary key is a field that uniquely identifies each record

A primary key is a field that uniquely identifies each record

A record is a group of related fields:

A character is one byte: numbers, letters, space,punctuation marks, or other symbols

Database software, often called a database managementsystem (DBMS)

GPS is Global Positioning System

A hub or switch is a device that provides a central point for cables in a network

Internet is the largest WAN

A communication device is any type of hardware capable of transmitting data, instruction and information between a sending device and a receiving device

A network is a collection of computers and devices connected together via communications devices and transmission media.

Most computers are digital

Digital signals are continuous and vary in strength and quality

The binary system uses two unique digits (2 and 1)

Digital communications describes a process in which two or more computers or devices transfer data, instruction and information, true or false?

A broadband modem sends and receives data and information to and from a digital line

Analog signals are continuous and vary in strength quality

Analog signals are in one of two states: on or off

Digital signals are in one of two states: on or off