himem.sys
An extended memory (XMS) driver included with DOS, Windows 3.1, Windows for Workgroups and Windows 95. Windows 95 automatically loads himem.sys during start-up. With older versions of Windows, and with DOS, himem.sys must be explicitly loaded by placing a command in CONFIG.SYS.
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- hit
(1) Also called a page hit. The retrieval of any item, like a page or a graphic, from a Web server. For example, when a visitor calls up a Web page with four graphics, that’s five hits, one for the page and four for the graphics. For this reason, hits often aren’t a good indication […]
- hit-and-run post
In online forums and other online discussion spaces, a hit-and-run post is the term used to describe users who register for the service, post one message, then never return. In most cases these single posts contains information not related to the forum topic or the post may contain a single URL that is posted for […]
- hoax
In e-mail terminology a hoax is a message which is written to deliberately spread fear, uncertainty and doubt.
- hold down timer
A function of a router that prevents a route from being updated for a specified length of time, in seconds. A hold down timer is often used to ensure sufficient time for all routers to be updated when a route fails. See router.
- hold-up time
The amount of time, measured in in milliseconds that a power supply unit (PSU) can maintain output within the specified voltage range after a loss of input power. The hold-up time is thje amount of time that the system can continue to run without resetting or rebooting during a power interruption. Some power supplies may […]