guard time
A time interval left vacant (i.e., during which no data is sent) on a transmission channel that can be used for synchronization and/or compensating for a signal distortion. The guard time provides a safety margin against symbol interference in the time between sequential operations such as transmission, encoding, decoding or switching.
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- gutter
In desktop publishing, the space between columns in a multiple-column document.
- HACMP
Short for high availability cluster multiprocessing, HACMP is an IBM cluster system for AIX-based computing platforms. IBM’s HACMP product was first released in 1991. All popular applications work with HACMP including DB2, Oracle, SAP, WebSphere, and others.
- HAL
Short for hardware abstraction layer, programming in an operating system that functions as an interface between a system��s hardware and software, providing a consistent hardware platform on which to run applications. When a HAL is employed, applications do not access hardware directly but access the abstract layer provided by the HAL. Like APIs, HALs allow […]
- HAN
Short for home area network. A HAN is a network contained within a user’s home that connects a person’s digital devices, from multiple computers and their peripheral devices to telephones, VCRs, televisions, video games, home security systems, “smart” appliances, fax machines and other digital devices that are wired into the network.
- HBA
Short for host bus adapter. An HBA is an I/O adapter that sits between the host computer’s bus and the Fibre Channel loop and manages the transfer of information between the two channels. In order to minimize the impact on host processor performance, the host bus adapter performs many low-level interface functions automatically or with […]