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A covert listening device, more commonly known as a bug or a wire, is usually a combination of a miniature radio transmitter with a microphone. The use of bugs, called bugging, or wiretapping is a common technique in surveillance , espionage and police investigations.
FoxPro is a text-based procedurally oriented programming language and database management system (DBMS), and it is also an object-oriented programming language, originally published by Fox Software and later by Microsoft, for MS-DOS, Windows, Macintosh, and UNIX. The final published release of FoxPro was 2.6.
ActiveVFP (also known as AVFP) is a server-side scripting framework designed for Web development to produce dynamic Web pages.Similar to PHP, but using the native Visual Foxpro (VFP) language and database (or other databases like Microsoft SQL and MySQL), ActiveVFP can also be used in Model-View-Controller (MVC) web applications as well as RESTful API.
Visual FoxPro, commonly abbreviated as VFP, is tightly integrated with its own relational database engine, which extends FoxPro's xBase capabilities to support SQL query and data manipulation. Unlike most database management systems , Visual FoxPro is a full-featured, dynamic programming language that does not require the use of an additional ...
Thunderbolt (interface) also supports daisy-chained devices such as RAID arrays and computer monitors. [3] DisplayPort 1.2 and higher features Multi-Stream Transport (MST) mode. In this mode, multiple screens can be connected either using a hub or as a daisy chain. The Hexbus is the 10-wire bus of Texas Instruments, used in the TI-99/4A, CC-40 ...
Phreaking began in the 1960s when it was discovered that certain whistles could replicate the 2600 Hz pitch used in phone signalling systems in the United States. [3] Phone phreaks experimented with dialing around the telephone network to understand how the phone system worked, engaging in activities such as listening to the pattern of tones to figure out how calls were routed, reading obscure ...
The T-carrier is a hardware specification for carrying multiple time-division multiplexed (TDM) telecommunications channels over a single four-wire transmission circuit. It was developed by AT&T at Bell Laboratories ca. 1957 and first employed by 1962 for long-haul pulse-code modulation (PCM) digital voice transmission with the D1 channel bank.
This power conversion system is backed up with a bank of batteries, resulting in continuation of service during interruption of power to the customer supplied by their electrical utility. The maximum resistance of the loop is 1,700 ohms, which translates into a maximum loop length of 18,000 feet or 5 km using standard 24-gauge wire.