Technical support

Terms related to computer fundamentals, including computer hardware definitions and words and phrases about software, operating systems, peripherals and troubleshooting.

nil - In general use, nil (a contraction of Latin "nihil") means "nothing" or the absence of something.
null set - In mathematical sets, a null set is a set that does not contain any values or elements.
OEM (original equipment manufacturer) - OEM, or original equipment manufacturer, is a broad term that describes a web of relationships among IT hardware vendors, hardware component makers, software vendors and channel partners such as resellers and distributors.
on-demand computing (ODC) - On-demand computing (ODC) is a delivery model in which computing resources are made available to the user as needed.
onshore outsourcing (domestic outsourcing) - Onshore outsourcing, also known as domestic outsourcing, is the obtaining of services from someone outside a company but within the same country.
open system - In computing, an open system is a platform that can be modified and extended and has freely available documentation.
operand - In computing and mathematics, an operand is an object that is operated on by some type of operator.
operation (computing) - An operation, in computing, is an action that is carried out to accomplish a given task.
operations research (OR) - Operations research (OR) is an analytical method of problem-solving and decision-making that is useful in the management of organizations.
pagefile - In storage, a pagefile is a reserved portion of a hard disk that is used as an extension of random access memory (RAM) for data in RAM that hasn't been used recently.
patch catalog - A patch catalog is a repository of data associated with software patches.
PC card - A PC card, also known as a PCMCIA card, is a credit card-sized memory or input/output (I/O) device that fits into a PC, usually a laptop.
personality profile - A personality profile is a knowledge management tool used to provide an evaluation of an employee's personal attributes, values and life skills in an effort to maximize his or her job performance and contribution to the company.
pervasive computing (ubiquitous computing) - Pervasive computing, also called ubiquitous computing, is the growing trend of embedding computational capability (generally in the form of microprocessors) into everyday objects to make them effectively communicate and perform useful tasks in a way that minimizes the end user's need to interact with computers as computers.
petaflop - A petaflop is a measure of a computer's processing speed and can be expressed as a quadrillion (thousand trillion) floating point operations per second (FLOPS).
pixel - The pixel -- a word invented from picture element -- is the basic unit of programmable color on a computer display or in a computer image.
Planck's constant - Planck's constant, symbolized as h, is a fundamental universal constant that defines the quantum nature of energy and relates the energy of a photon to its frequency.
portal - Portal is a term, generally synonymous with gateway, for a World Wide Web site that is or proposes to be a major starting site for users when they get connected to the Web or that users tend to visit as an anchor site.
POST (Power-On Self-Test) - A Power-On Self-Test (POST) is an operation initiated by a computer after it has been turned on but before it boots up the OS.
printed circuit board (PCB) - A printed circuit board (PCB) is a structure for assembling electronic components and their connections into a unified circuit that allows electrical current to pass between components.
problem program - Now seldom used, the term problem program is used to distinguish a computer program that directly supports a user application from an operating system, a utility, or any other underlying support programming.
process hollowing - Process hollowing is a security exploit in which an attacker removes code in an executable file and replaces it with malicious code.
program - In computing, a program is a specific set of ordered operations for a computer to perform.
project management - Project management is the discipline of using established principles, procedures and policies to guide a project from conception through completion.
Project planning: What it is and 5 steps to create a plan - Project planning is a project management discipline that addresses how to complete a project in a certain time frame, usually with clearly defined stages, milestones and designated resources.
propagation delay - Propagation delay is the amount of time required for a signal to be received after it has been sent; it is caused by the time it takes for the signal to travel through a medium.
prototype - A prototype is an early version of a product from which future versions are developed.
Q format - Q (number) format is a fixed-point method of coding fractional and whole integers for processing by a computer’s CPU or a digital signal processor (DSP).
quantum interference - Quantum interference is when subatomic particles interact with and influence themselves and other particles while in a probabilistic superposition state.
quantum internet - The quantum internet is a theoretical system of interconnected quantum computers that uses quantum signals to send information rather than radio waves.
quantum supremacy - Quantum supremacy is the experimental demonstration of a quantum computer's dominance and advantage over classical computers by performing calculations previously impossible at unmatched speeds.
qubit (short for quantum bit) - A qubit (short for quantum bit) is the basic unit of information in quantum computing and counterpart to the bit (binary digit) in classical computing.
random numbers - As the term suggests, a random number is a number chosen by chance -- i.
raw data (source data or atomic data) - Raw data is the data originally generated by a system, device or operation, and has not been processed or changed in any way.
read-only - Read-only is a file attribute which only allows a user to view a file, restricting any writing to the file.
real-time monitoring - Real-time monitoring is the delivery of continuously updated data about systems, processes or events.
reseller - In information technology, a reseller is a company that typically purchases IT products or services from a product manufacturer, distributor or service provider and then markets them to customers.
resolution - Resolution is the number of pixels -- picture elements or individual points of color -- that can be contained on a display screen or in a camera sensor.
return merchandise authorization (RMA) - An RMA (return merchandise authorization) is a numbered authorization provided by a mail-order or e-commerce merchant to permit the return of a product.
reverse-engineering - Reverse-engineering is the act of dismantling an object to see how it works.
RGB (red, green and blue) - RGB (red, green and blue) refers to a system representing the colors used on a digital display screen.
RMM software (remote monitoring and management software) - RMM software (remote monitoring and management software) is a type of application that information technology (IT) service providers and departments use to maintain their clients' and business organizations' IT assets, infrastructure and systems.
robot - A robot is a machine designed to execute one or more tasks automatically with speed and precision.
runbook - Runbooks are a set of standardized written procedures for completing repetitive IT processes within a company.
Sarbanes-Oxley Act - The Sarbanes-Oxley Act of 2002 is a federal law that established sweeping auditing and financial regulations for public companies.
scalability - In information technology, scalability (frequently spelled 'scaleability') has two uses: for a computer application to function with change in size and volume, and to take advantage of a rescale.
Schrodinger's cat - Schrödinger's cat is a famous hypothetical experiment designed to point out a flaw in the Copenhagen interpretation of superposition as it applies to quantum theory.
scientific method - The scientific method is the process of objectively establishing facts through testing and experimentation.
search operator - A search operator -- sometimes referred to as a search parameter -- is a character or string of characters used in a search engine query to narrow the focus of the search.
second (s or sec) - The second (s or sec) is the International System of Units (SI) unit of time measurement.
sensor - A sensor is a device that detects and responds to some type of input from the physical environment.
shift register - A shift register is a digital memory circuit found in calculators, computers, and data-processing systems.
six degrees of separation - Six degrees of separation is the theory that any person on the planet can be connected to any other person on the planet through a chain of acquaintances that has no more than five intermediaries.
skunkworks project (Skunk Works) - A skunkworks project, also known as Skunk Works, is an innovative undertaking, involving a small group of people, that is outside the normal research and development (R&D) channels within an organization.
slack space (file slack space) - Slack space, or file slack space, is the leftover storage space on a computer's hard disk drive when a file does not need all the space it has been allocated by the operating system.
smart machines - A smart machine is a device embedded with machine-to-machine and/or cognitive computing technologies such as artificial intelligence (AI), machine learning (ML) or deep learning, all of which it uses to reason, solve problems, make decisions and even take action.
SMB (small and medium-sized business or small and midsize business) - SMB is an abbreviation for a small and medium-sized business, sometimes called a small and midsize business.
soft copy - A soft copy (sometimes spelled 'softcopy') is an electronic copy (or e-copy) of some type of data, such as a file viewed on a computer's display or transmitted as an email attachment.
soft reset - A soft reset is a restart of a device, such as a smartphone, tablet, laptop or personal computer (PC).
software - Software is a set of instructions, data or programs used to operate computers and execute specific tasks.
software documentation - In the software development process, software documentation is the information that describes the product to the people who develop, deploy and use it.
software package - A software package is a group of programs bundled together into a product suite.
software patch - A software patch or fix is a quick-repair job for a piece of programming designed to resolve functionality issues, improve security or add new features.
solid - A solid is a state of matter that retains its shape and density when not confined.
sound card - A sound card is a computer component responsible for generating and recording audio.
sound wave - A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium (such as air, water or any other liquid or solid matter) as it propagates away from the source of the sound.
space - Space is a term that can refer to various phenomena in science, mathematics and computing and generally encompasses the concept of an area or region.
spectrum analyzer - A spectrum analyzer is a device that measures and displays signal amplitude (strength) as it varies by frequency within its frequency range (spectrum).
square meter (meter squared) - The square meter, also called the meter squared, is the International System of Units (SI) unit of area.
stack overflow - A stack overflow is a type of buffer overflow error that occurs when a computer program tries to use more memory space in the call stack than has been allocated to that stack.
standard temperature and pressure (STP) - Standard temperature and pressure (STP) refers to the nominal conditions in the atmosphere at sea level.
statistical mean, median, mode and range - The terms mean, median, mode, and range describe properties of statistical distributions.
Stefan-Boltzmann constant - The Stefan-Boltzmann constant, symbolized by the lowercase Greek letter sigma (σ), is a physical constant expressing the relationship between the heat radiation emitted by a black body and its absolute temperature.
STEM (science, technology, engineering, and mathematics) - STEM is an educational approach that prepares primary and secondary students for college, graduate study and careers in the fields of science, technology, engineering and mathematics (STEM).
storage (computer storage) - Data storage is the collective methods and technologies that capture and retain digital information on electromagnetic, optical or silicon-based storage media.
storage filer - A storage filer is a type of file server designed and programmed for high-volume data storage, backup and archiving.
storage medium (storage media) - In computers, a storage medium is a physical device that receives and retains electronic data for applications and users and makes the data available for retrieval.
storage volume - A storage volume is an identifiable unit of data storage.
streaming media - Streaming media is video or audio content sent in compressed form over the internet and played immediately over a user's device, rather than being saved to the device hard drive or solid-state drive.
synchronicity - Synchronicity is a concept developed by psychologist Carl Jung to describe a perceived meaningful coincidence.
Sysprep (System Preparation Tool) - Sysprep is Microsoft's System Preparation tool intended to duplicate, test and deliver new installations for the Windows operating system based on an established installation.
system administrator (sysadmin) - A system administrator (sysadmin) is an information technolog professional who supports a multiuser computing environment and ensures continuous, optimal performance of IT services and support systems.
systems thinking - Systems thinking is a holistic approach to analysis that focuses on the way that a system's constituent parts interrelate and how systems work over time and within the context of larger systems.
tebibyte (TiB) - A tebibyte (TiB) is a unit of measure used to describe computing capacity.
technical requirements - Technical requirements, in the context of software development and systems engineering, are the factors required to deliver a desired function or behavior from a system to satisfy a user’s standards and needs.
technological convergence - Technological convergence is a term that describes bringing previously unrelated technologies together, often in a single device.
telecommuting - Telecommuting allows an employee to complete work assignments from outside the traditional workplace using telecommunications tools such as email, phone, chat and video apps.
template - A template is a form, mold or pattern used as a guide to make something.
Terabyte (TB) - A terabyte (TB) is a unit of digital data that is equal to about 1 trillion bytes.
theory of relativity - Albert Einstein's theory of relativity is actually two separate theories: his special theory of relativity, postulated in the 1905 paper, The Electrodynamics of Moving Bodies and his theory of general relativity, an expansion of the earlier theory, published as The Foundation of the General Theory of Relativity in 1916.
token - In general, a token is an object that represents something else, such as another object (either physical or virtual), or an abstract concept as, for example, a gift is sometimes referred to as a token of the giver's esteem for the recipient.
Total Quality Management (TQM) - Total Quality Management (TQM) is a management framework based on the belief that an organization can build long-term success by having all its members -- from low-level workers to its highest-ranking executives -- focus on improving quality and, thus, delivering customer satisfaction.
touch screen - A touch screen is an electronic display screen that is also an input device.
truncation error - A truncation error is the difference between an actual and a truncated, or cut-off, value.
truth table - A truth table is a breakdown of all the possible truth values returned by a logical expression.
unzipping - Unzipping is the act of extracting the files from a zipped single file or similar file archive.
uptime and downtime - In computing, uptime is a measure of how long a computer or service is on and available.
user group - In personal or business computing, a user group is a set of people who have similar interests, goals or concerns.
utility computing - Utility computing is a service provisioning model where a provider makes computing resources, infrastructure management and technical services available to customers as they need them.
value chain - A value chain is a concept describing the full chain of a business's activities in creating a product or service -- from initial receipt of materials through its delivery to market.