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Appendix | 8 |
|
Term | Definition |
DNS | Abbreviation for Domain Name System. A system that acquires the |
| supported IP addresses from host names in a network environment. |
| DNS allows the user to access other computers over a network by |
| specifying host names, instead of difficult to memorize and under- |
| stand IP addresses. |
|
|
DPI (dpi) | Abbreviation for Dots Per Inch. A resolution unit used by printers and |
| scanners. Indicates how many dots per inch are represented in an |
| image. The higher the value, the higher the resolution. |
|
|
Driver | Software that works as a bridge between a computer and a periph- |
| eral device. |
|
|
Ethernet | LAN transmission line standard |
|
|
File Extension | The characters added to the file name in order to differentiate file for- |
| mats. The file extension is added after a period, for example, “.bmp” |
| or “.jpg”. |
|
|
FTP | Abbreviation for File Transfer Protocol. A protocol for transferring |
| files over the Internet or an intranet on the TCP/IP network. |
|
|
Gradation | The light and dark levels of an image. As the number increases, |
| smoother brightness variations can be reproduced. |
|
|
Grayscale | Monochrome image expressive form using the gradation information |
| from black to white |
|
|
Halftone | The method of producing the light and dark parts of an image |
| through varying sizes of black and white dots |
|
|
Hard Disk | Large capacity storage device for storing data. The data can be |
| stored even if the power is turned off. |
|
|
HTTP | Abbreviation for HyperText Transfer Protocol. A protocol used to |
| send and receive data between a Web server and a client (Web |
| browser). Documents containing images, recordings, and video clips |
| can be exchanged with the expressive form information. |
|
|
Install | To install hardware, operating systems, applications, printer drivers |
| on to a computer |
|
|
IP Address | A code (address) that is used to identify individual network devices |
| over the Internet. A maximum of three digits for four numbers are |
| displayed such as 192.168.1.10. IP addresses are assigned to devic- |
| es, including computers, which are connected to the Internet. |
|
|
J2RE | Abbreviation for Java 2 Runtime Environment. One type of JavaVir- |
| tual Machine (Java VM) in a program operating environment written |
| in the |
| tems. This is required to run applications that were created with |
| Java. |
|
|
Java | A programming language developed by Sun Microsystems that runs |
| on most computers regardless of the installed hardware and operat- |
| ing system. However, in order to run Java applications, an operating |
| environment called “Java Virtual Machine (Java VM)” is required. |
|
|
JPEG | Abbreviation for Joint Photographic Experts Group. One of the file |
| formats for saving image data. (The file extension is “.jpg”.) The com- |
| pression ratio is roughly 1/10 to 1/100. This format uses an effective |
| method in the compression of |
| photographs. |
|
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Appendix Chapter 8
C300 |