Technology / Computers Glossary

Downstream Frequency: Refers to the frequency that is used when transmitting information between the CMTS and cable modem.

Drive Bay: An allocated space inside a computer case where an internal device such as a; floppy, CD-ROM or DVD-ROM is mounted.

Driver: A driver is a software program that is the driving force behind a device. Each computer device needs a driver. Many drivers are included with a computers operating system when you purchase i . . . View Full Definition

Dual Core: This refers to a new Central Processing Unit (CPU) structure. The difference between a single core and dual core is that a dual core system has two CPU's that are electronically wired togeth . . . View Full Definition

Dual In-Line Memory Module (DIMM): DIMM is a later version of memory than that of its earlier SIMM (Single In-line) counterpart. A DIMM module was introduced for the Pentium processor because the Pentium processor needed a 64 . . . View Full Definition

Dual In-Line Package (DIP): This is a type of chip that was most popular when memory was directly installed on the motherboard. It can be identified by its rectangular casing and has two rows of connector pins on both sides.

Dumb Terminal: This refers to a monitor a keyboard setup that can receive, enter, transmit and display information from a server. But it cannot process any information. Most commonly, these terminals were . . . View Full Definition

Duplex: This refers to a communication channel that has the ability to transmit in both directions. This is widely used in printing as you can print on both sides of the paper at once. Sometimes ref . . . View Full Definition

Dynamic Host Configuration Protocol (DHCP): This is a process of dynamically allocating IP addresses so that they can be reused. This provides a way of managing IP addresses for all PC's connected to cable modems in a network.

Dynamic Hypertext Mark-Up Language (DHTML): Stands for Dynamic HTML. This term applies to many web design standards such as HTML, JavaScript and CSS where these elements may be intermixed to create more dynamic design elements. By usi . . . View Full Definition

Dynamic Link Library (DLL): This refers to a file that contains executable code that can be used by many different programs at the same time. DLLs have great benefits to a systems storage structure and offer performanc . . . View Full Definition

Dynamic Programming Language: This dynamic programming language has the ability to change the program structure as it runs.

Dynamic Random Access Memory (DRAM): Dynamic Random Access Memory. This is a common type of random access memory that is used in personal computing. The 'dynamic' in its name is due to the fact that this memory needs to be refr . . . View Full Definition

Dynamic URL: A Web site that is database driven can produce dynamic URLs. Or a URL of a Web site that is produced by running a script can be considered to be a dynamic URL. For instance, if you visit a W . . . View Full Definition

E3: Similar to the North America T3 high speed digital transmission, the E3 European counterpart is capable of transmitting data at 34.368 Mbps.

Edge Connector: The part of a circuit board that contains a series of contacts that is then inserted into an expansion slot or connector.

Electrical Erasable Programmable Read Only Memory (EEPROM): Electrical Erasable Programmable Read Only Memory. This type of memory can be reprogrammed and erased electronically repeatedly by using a device programmer which provides an electric surge. . . . View Full Definition

Electro-Static Discharge (ESD): The grounding of static electricity. A sudden flow of electricity between two objects. The primary cause of integrated circuit damage and failure. Static can be picked up by the technician i . . . View Full Definition

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