Concise definitions on frequent terms

Duty Cycle

  08/26/08 02:04, by admin, Categories: Imaging

Duty cycle is the page quantity which does not affect printer performance for a month. Generally the printer has the lifespan limitation such as pages per year. The lifespan means the average capacity of print-outs, usually within the warranty period. For example, if the duty cycle is 48,000 pages per month assuming 20 working days, a printer limits to 2,400 pages a day.

Dots Per Inch (DPI)

  08/26/08 02:03, by admin, Categories: Imaging

Measurement of resolution that is used for scanning and printing. Generally, higher DPI results in a higher resolution, more visible detail in the image, and a larger file size.


  10/03/09 20:08, by sandeepbk, Categories: Imaging

The Institution of Electrical and Electronics Engineers (IEEE) is an non-profit organisation involved in advance development of all technologies related to electricity.


  10/03/09 21:14, by sandeepbk, Categories: Imaging

The Joint Photographic Experts Group (JPEG) algorythm is a very commonly used method of compression for photographic images. It is also a file format used for storing or transmitting photos.

The JPEG algorythm is lossy which means some details of the original picture are lost when compressing the algorythm. The algorythm has a quality setting allowing to set a balance between smaller file size and better quality.

Domain Name

  02/20/11 00:25, by admin, Categories: Networks

A domain name looks like, or even for example.

Those names are registered centrally for each "Top Level Domain" (TLD) such as .com , .org or .de ( "ca" being teh country code for Canada for example ).

Once a domain name is registered it can be used to locate servers on the internet by using the Domain Name System in order to route e-mail or access web sites.

Subnet Mask

  12/06/13 19:00, by admin, Categories: Networks

The subnet mask is used in conjunction with the network address to determine which part of the address is the network address and which part is the host address.

A subnet mask may look like which means the first 3 bytes are part of the network and the last byte is the address of the host on the subnet.

Another way to write the same network mask as above is /24 which means the 24 first bits (8 bits * 3 bytes) are part of the network.


  08/26/08 01:48, by admin, Categories: Imaging

A bitmapped image format used internally by the Microsoft Windows graphics subsystem (GDI), and used commonly as a simple graphics file format on Windows.


  12/06/13 18:22, by admin, Categories: Networks

The Digital Living Network Alliance (DLNA) is a standard that allows devices on a home network to share information with each other.

It is typically used to store media files (photos, music, videos...) on a central server and allow devices like connected TVs or music palyers to access these media files directly through the network.


  08/26/08 01:44, by admin, Categories: Networks

AppleTalk is a proprietary suite of network protocols developed by Apple. It was included in the original Macintosh (1984) but is now deprecated by Apple in favor of TCP/IP.

Lightweight Directory Acess Protocol (LDAP)

  10/03/09 21:16, by sandeepbk, Categories: Networks

Lightweight Directory Access Protocol (LDAP) is an networking protocol for querying and modifying directory services running over TCP/IP.

Is is often use to verify a login/username against a central directory to allow/reject login and then maybe obtain more detailed information on the user (firstname, lastname, etc.)