This slide will discuss a few commonly used terms throughout this presentation that are useful to know in this context. The first is a term commonly used in industry AFE (Analog Front End). It is essentially an analog circuit that conditions the signals coming in from analog sensors, and uses fundamental analog components like op amps, comparators, and multiplexors. An analog filter, as the term filter would suggest, is an analog circuit that allows the passing of analog signals of only a certain frequency. While rejecting the others. Examples of analog filters are low pass, high pass, band pass, and pass reject. An analog to digital converter (ADC) in the microcontroller world, is as circuit that would convert the processed and filtered analog signal, into digital values that represent the amplitude of that particular analog signal. A Digital to Analog converter (DAC) is essentially the opposite of an ADC, it takes a digital signal and converts it back to an analog signal. In designs such as these in the analog domain it is commonly used to provide compensation or some sort of feedback to the analog front end. Another term is the signal processing engine, as shown here in the block diagram in this slide. The signal processing engine is essentially a processor or CPU, with firmware running on it that helps process and makes sense of all of the analog signals and sensor data that have first been measured and then digitized using the ADC. Having a signal processing engine along with an analog sensor front end allows aggregation of multiple sensors and data to be preprocessed and standardized, and then simply sent over to a host processor over serial communication interfaces. Essentially what is happening is offloading all of the processing of the sensor data into a dedicated controller in this case, an ARM Cortex M0. This entire system put together starting from the AFEs to the filter, the DACs and ADCs, combined with the analog signal processing engine, is a term referred to as the Analog Coprocessor. This PTM will discuss the PSoC Analog Coprocessor.