Computer Glossary Set – 5

1. DAC – Digital-to-Analog Converter

The most common use for a DAC is to convert digital audio to an analog signal.

This conversion typically takes place in the sound card , which has a built-in DAC.ACs are also used for converting video signals.

2. Data

Computer data is information processed or stored by a computer.

This information may be in the form of text documents, images, audio clips, software programs, or other types of data.

Computer data may be processed by the computer’s CPU  and is stored in files and folders on the computer’s hard disk.

3. Data Base

It is a Collection of files.Data remains in an organized form in a database.

A database contains data stored in a structured format.

It includes one or more tables, which each contain multiple fields. Each field is assigned a specific data type,such as a string or integer.

4. Data Capture

It is a process of collecting or capturing data from a site or a source.

5. Data Manipulation

Captured data are manipulated to produce information

6. DDL – Data Definition Language

It is used to define the structure of a database, including the tables, columns, and data types that it contains.

The most common DDL is a subset of SQL, the Structured Query Language. 

DDLs can also be used to describe other types of data structures, including XML schemas and other data models.

7. DDR – Double Data Rate

It is an advanced version of SDRAM, a type of computer memory.

DDR memory can send and receive signals twice per clock cycle.

The efficient operation of DDR-SDRAM makes the memory great for notebook computers since it uses up less power.

8. Dial up

A dial-up connection uses a modem to connect to an ISP or another computer.

It uses standard analog phone lines to transfer data up to 56 Kbps.

Both cable and DSL services provide a constant connection and support data transfer speeds over 100 times faster than dial-up modems.

9. DHTML – Dynamic Hyper Text Markup Language.

It is used to create dynamic content on web pages.

10. DIMM – Dual In-Line Memory Module

 A DIMM is a small circuit board that holds memory chips.

It uses a 64-bit bus to the memory, whereas a single in-line memory module (SIMM) only has a 32-bit path.

DIMMs have faster data transfer capabilities than SIMMs, they have pretty much replaced SIMMs.