An ITIN (Individual Taxpayer Identification Number, sometimes called a PIN, Tax ID or Taxpayer ID) will serve as your identification number for filing your tax returns. If you do not qualify for an SSN, you will need to apply for an ITIN.
Active Server Page Extended ASP.NET script. An aspx file extension is associated with Active Server Page Extended format used by Internet Information Services (IIS) web server with server side scripting language ASP.NET used to dynamically generate websites. Generated output from an .aspx page in your browser is common html page.
In electronics, a multiplexer or mux (occasionally the term mul-dex is also found, for a combination multiplexer-demultiplexer) is a device that selects one of many analog or digital input signals and outputs it into a single output line.