PLD
Short for programmable logic device, a generic term for an integrated circuit that can be programmed in a laboratory to perform complex functions. A PLD consists of arrays of AND and OR gates. A system designer implements a logic design with a device programmer that blows fuses on the PLD to control gate operation.
System designers can use development software that converts basic code into instructions a device programmer needs to implement a design.
PLD types can classified into the following groups
PROMs (Programmable Read Only Memory) – offer high speed and low cost for relatively small designs
PLAs (Programmable Logic Array) – offer flexible features for more complex designs
PAL/GALs (Programmable Array Logic/Generic Array Logic) – offer good flexibility and are faster and less expensive than PLAs
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- PLM
Short for Product Lifecycle Management, it refers to a set of software tools used for mechanical design, analysis and manufacturing to support products from when they are first conceived through distribution and retirement. *PLM is assembled from various software programs, rather than purchased outright as a single commercial off-the-shelf product. Once assembled, a well-designed PLM […]
- PLL
Short for phase-locked loop, an electronic circuit that controls an oscillator so that it maintains a constant phase angle (i.e., lock) on the frequency of an input, or reference, signal. A PLL ensures that a communication signal is locked on a specific frequency and can also be used to generate, modulate and demodulate a signal […]
- PLMN
Short for public land mobile network, a generic term for a mobile wireless network that is centrally operated and administrated by an organization and uses land-based radio frequency transmitters or base stations as network hubs. PLMNs can stand alone and interconnect with one another or connect to a fixed system such as the PSTN. Cellular […]
- PL/B
Short for Programming Language for Business, PL/B is an English-like high-level programming language that offers screen, file and character string manipulation. The PL/B source code will compile and run without changes across multiple platforms and it incorporates strong file access capabilities that distinguish it from other languages. PL/B is also multi-user friendly, as no additional […]