logic bomb
Also called slag code, programming code added to the software of an application or operating system that lies dormant until a predetermined period of time (i.e., a period of latency) or event occurs, triggering the code into action. Logic bombs typically are malicious in intent, acting in the same ways as a virus or Trojan horse once activated. In fact, viruses that are set to be released at a certain time are considered logic bombs. They can perform such actions as reformatting a hard drive and/or deleting, altering or corrupting data.
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- logic gate
(loj´ik gāt) (n.) A type of circuit (or collection of transistors and resistors) that regulates the flow of electricity (or optical signals in fiber optic computing systems) that determines the Boolean logic computers use to make complex logical decisions. The three simple gates-AND, OR and NOT-combine to perform complex decision making processes. The on or […]
- logical
(1) Refers to a user’s view of the way data or systems are organized. The opposite of logical is physical, which refers to the real organization of a system. For example, a logical description of a file is that it is a collection of data stored together. This is the way files appear to users. […]
- logical drive
A part of a physical disk drive that has been partitioned and allocated as an independent unit, and functions as a separate drive altogether. For example, one physical drive can be partitioned into drives F:, G:, and H:, each representing a separate logical drive but all still part of the one physical drive. Using the […]
- Logical Topology
Also called signal topology. Every LAN has a topology, or the way that the devices on a network are arranged and how they communicate with each other. The way that the workstations are connected to the network through the actual cables that transmit data — the physical structure of the network — is called the […]
- look-and-feel
Refers to the general appearance and operation of a user interface. This is a hot legal issue because some software companies are claiming that competitors who copy the look-and-feel of their products are infringing on their copyright protection. To date, the courts have not ruled definitively on this matter.