selector Hear it!

selector Definition

se·lec·tor (sə lek′tər)

noun

a person or thing that selects

selector Telecom Definition

Also known as a wiper, a selector is a component of a step-by-step (SxS) electromechanical circuit switch. In the most basic implementation, the user dials digits on a rotary telephone, which opens and closes a contact, sending electrical pulses across an electrified copper local loop circuit. The central office (CO) or PBX switch detects the pulses, which cause the selector to step (i.e., move one step per pulse) across contacts.As the user dials each digit in the telephone number, the selector steps up to the next level, step-by-step. So, a typical seven-digit local telephone number corresponds to seven levels in a line selector. Originally, each subscriber line was associated with a line selector.The subsequent invention of the line finder allowed many lines (e.g., 100 or so) to share a bank (10 or so) of selectors, depending on the activity levels of the individual subscribers. See also SxS.

selector Usage Examples

Converse of object

  • impress: Emily Freeman also showed good form with 24.00 in the 200m to impress the selectors for the forthcoming European Cup team.
  • specify: Programmer's Notes: This function will fail if the selector specified in BX is not a code segment or is invalid.

Adjective modifier

  • rotary: The machine's sample rate is adjusted by using a rotary selector on the rear panel.
  • contextual: For example, the contextual selector in P EM { background: yellow } is P EM.
  • id: You then type the name you want to use for your ID selector.
  • random: There is also a random data selector to request samples of data from our databases.
  • adjacent: It shows the possibilities that we would have if IE was to add support for pseudo and adjacent sibling selectors.
  • chief: Chief selector Wasim Bari gave his blessing from Pakistan.

Modifies a noun

  • knob: At the top of the nine channels there was a large selector knob.
  • switch: The rotary selector switch to the right was the monitor selector.
  • lever: The automatic transmission selector lever is on the steering column.
  • widget: Click and drag on the canvas to put a file selector widget on your form next to the label.
  • icon: Click on the Source selector icon to open the Data Source Selector popup window.
  • dial: Pentax have improved some of the buttons and dials - for instance the selector dial is now much easier to rotate.

Noun used with modifier

  • pickup: All the details are now black too: the knobs, truss rod cover and pickup selector are all replaced.
  • gear: Picture 7 - now with gear selector cam assembly.
  • descendant: Instead of classes, we use the element names and use descendant selectors.
  • attribute: Attribute selectors Attribute selectors allow you to target an element based upon its ' attribute ' .
  • voltage: A voltage selector plug permits adjustment of the output voltage, and the frequency can also be adjusted by tap selection internally.
  • chapter: This online version has a linked contents page, a chapter selector and a page selector feature.