lock-in
The phrase used to describe a Web page that disables the browser’s back button and prevents the user from leaving the page via the back button. The lock-in practice was originally used by pornography Web sites, however, more mainstream Web sites also use lock-in to keep readers on the Web site once it has loaded. Also a form of mousetrapping.
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- lock
(1) To make a file or other piece of data inaccessible. File locking is a critical component of all multi-user computer systems, including local-area networks. When users share files, the operating system must ensure that two or more users do not attempt to modify the same file simultaneously. It does this by locking the file […]
- lockstep processor technique
A processor lockstep is a technique used to achieve high reliability in a microprocessor system. This is done by adding a second identical processor to a system that monitors and verifies the operation of the system processor. * The two processors are initialized to the same state during system start-up, and they receive the same […]
- Log File
A file that lists actions that have occurred. For example, Web servers maintain log files listing every request made to the server. With log file analysis tools, it’s possible to get a good idea of where visitors are coming from, how often they return, and how they navigate through a site. Using cookies enables Webmasters […]
- log on
(v.) To make a computer system or network recognize you so that you can begin a computer session. Most personal computers have no log-on procedure — you just turn the machine on and begin working. For larger systems and networks, however, you usually need to enter a username and password before the computer system will […]
- log out
To end a session at the computer. For personal computers, you can log out simply by exiting applications and turning the machine off. On larger computers and networks, where you share computer resources with other users, there is generally an operating system command that lets you log off.