The use of parallel processing for running advanced application programs efficiently, reliably and quickly. The term applies especially to systems that function above a teraflop or 1012 floating-point operations per second. 

An Internet service provider (ISP) feature that speeds up data transfer by using an 'Acceleration server', that acts as a bridge between the user's dialup connection and a Web page. 

A packet-based mobile telephony protocol used in 3G UMTS radio networks to increase data capacity and speed up transfer rates. HSDPA, provides download speeds at least five times faster than earlier versions of UMTS.

A short-distance communications interface that is commonly used to interconnect routing and switching devices on local area networks (LANs) with the higher-speed lines of a wide area network (WAN).

A charting library written in pure JavaScript, that offers intuitive, interactive charts for web sites or web applications. 

A set of wireless local area network (WLAN) communication standards primarily used in European countries. There are two specifications: HiperLAN/1 and HiperLAN/2. 

HipHop Virtual Machine or (HHVM) is an open-source virtual machine designed for executing programs written in PHP and hack. HHVM uses a just-in-time (JIT) compilation approach to achieve superior performance while maintaining the development flexibility that PHP provides. HHVM is used by many including the omnipresent site, Facebook.

Hitachi Data Systems (HDS) is a company that provides modular mid-range and high-end storage systems, software and services. It is a wholly owned subsidiary of Hitachi Ltd. and part of the Hitachi Information Systems & Telecommunications Division.

Hive is an open source project under the Apache Software Foundation, initially developed by Facebook. It is a data warehouse infrastructure built on top of Hadoop for providing data summarization, query, and analysis. Hive provides a mechanism to project structure onto this data and query the data using a SQL-like language called HiveQL.

A holographic storage device that uses a laser to store data to optical media in three dimensions, maximizing  storage capacity by using the media's depth. 

Computer storage that uses laser beams to store computer-generated data in three dimensions. E.g. a credit card containing a logo in the form of a hologram. The idea is to use this type of technology to store computer information. 

The automation of electronic devices within a residential building. It may include centralized control of lighting, ventilation appliances, security locks of gates and doors etc. to provide convenience, comfort, energy efficiency and security.

A home network is two or more computers interconnected to form a local area network (LAN) within the home.This is so that computers can share files, programs, printers, other peripheral devices, and Internet access with other computers.  

Using Mobile IP,  the home network is where a mobile device has its permanent IP address. With Mobile IP, a mobile device can be plugged into "foreign" networks using a temporary care-of address.

A computer that functions as a server in a client-server home network. For small networks, a personal computer works perfectly well for this purpose, provided there is sufficient storage space and memory on the hard drive.

A home theater or home theatre is a theater built in a home, designed to mimic (or exceed) commercial theater performance and feeling, more commonly known as a home cinema. Today, home cinema implies a real "cinema experience" at a private home.