What is a programmable logical field?
A programmable logic field (PLA) is a device that provides a logical level of output or level based on an input set. As a combination logic circuit, a programmable logic field can be implemented using programmable memory devices. The programmable logic field is a simple alternative to use gates and tiring simplification of logical equations.
A programmable logical design is a better alternative to the logical solution of implemented solutions, because the disadvantage of traditional logical design is difficult to make changes to the existing design. Later, it was clear that the software tools were more practical due to the challenges in updating functions and optimizing the performance of new digital products. The programmable logic field is similar to the memory chip with the address of the bus and the data bus. For each combination of inputs there is a logical level output for as many outputs as needed. The programmable logical field that is a programmable logic device brings to AUMany practical solutions to the renown of Tomates.
The common PLA application is to implement the truth table that provides conditions based on input and output combinations based on these inputs. For example, there are several sensors that detect pumping conditions when controlling a water pump. One input is the indicator that the water tank is full, the next input is the indicator, if the incoming water is available, the next input is a logical level that shows whether the pump engine is too hot, and the next input is an indicator if the engine is under voltage. These indicators are generated by separate sensor circuits.
Typical sensor circuits use analog comparators to create active high or active low logical levels for a programmable logic field. The logical level of the "full water tank" can be made by a simple float switch. After a full tank can open a flatVákový switch. If the Tafull Circuit water is defective, it will tend to report that the tank is full, albeit otherwise.
whether logical levels are active high or active low, usually includes several factors. When using Pull-up resistors, the normal level of tendency tends to be an active high condition, which means that the resistor connected to a positive supply pipe is not most of the time. These considerations are very important for devices that can run on limited power, such as logical devices that extract energy from external systems. For example, solar photovoltaic controllers must consume a minimum current for long -term operation when the battery voltage decreases.
The programmable logic controller (PLC) is able to process the automation requirements based on sensing inputs and programmed instructions. It uses logic based on a limited set of instructions. Microcontrollers are microprocessors that have a defined instructions for processing data collection andSupervision checks.