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Tombac, or tombak, is a brass alloy with high copper content and 5–20% zinc content. [1] Tin , lead or arsenic may be added for colouration. [ 2 ] [ 3 ] It is a cheap malleable alloy mainly used for medals , ornament , decoration and some munitions .
The most satisfying phase of button collecting, however, will be the study which each button affords as to material or identification of subject or design. It entails the perusing of volume after volume of history and art and costuming; dating a button by shank or material; researching for characteristics of buttons of various countries; and ...
Silicon tombac has good friction bearing characteristics and is corrosion resistant but is not resistant to ammonia atmosphere. The strength properties are largely retained at application temperatures up to 200 °C. [1] It is a special alloy in terms of the combination of casting process and casting temperature.
Touch Memory (or contact memory) is an electronic identification device packaged in a coin-shaped stainless steel container. Touch memory is accessed when a touch probe comes into contact with a memory button. Read and/or write operations between the probe and memory chip are performed with just a momentary contact.
AIDC is also commonly referred to as "Automatic Identification", "Auto-ID" and "Automatic Data Capture". [2] AIDC is the process or means of obtaining external data, particularly through the analysis of images, sounds, or videos. To capture data, a transducer is employed which converts the actual image or a sound into a digital file. The file ...
Automatic target recognition (ATR) is the ability for an algorithm or device to recognize targets or other objects based on data obtained from sensors.. Target recognition was initially done by using an audible representation of the received signal, where a trained operator who would decipher that sound to classify the target illuminated by the radar.
The Dash Button and Dash Replenishment Service (DRS) were introduced by Amazon.com on March 31, 2015. Due to the timing of the announcement, there were a number of news stories questioning whether the Dash Button was an early April Fools joke. [7] [8] The Amazon Dash Button is a small electronic device designed to make ordering products easy ...
A wireless identification and sensing platform (WISP) is an RFID (radio-frequency identification) device that supports sensing and computing: a microcontroller powered by radio-frequency energy. [1] That is, like a passive RFID tag, WISP is powered and read by a standard off-the-shelf RFID reader, harvesting the power it uses from the reader's ...