Polymorphic Electronics

Novel Approach To Synthesis of Logic Circuits Based on Multifunctional Components

“…Beside the direct comparison of the results delivered by the proposed synthesis method and those obtained with the help of the conventional Espresso tool (in terms of the overall circuit size comprising 2-input logic elements and some special polymorphic functional blockssee corresponding sections in Table 2), several additional tests were performed in order to find whether the proposed method exhibits any dependence on the following attributes • Figure 2, total number of logic inputs (test circuits defined in Table 1 are shown from left to right in the order as follows -1, 2, 3, 5,6,7,13,14,15,8,9,10,11,12,4), to show the effect on the resulting synthesis method efficiency (compared with Espresso tool as 100 % reference).…”

“…• Figure 4, percentage of the inputs with logic 1 value (test circuits defined in Table 1 are shown from left to right in the order as follows -11, 12, 15, 2, 4, 7, 1, 3, 5,6,8,9,10,13,14). Reference in the case of the different percentage of inputs with a logic 1 value is shown here for circuits defined in Table 2.…”

“…The notion of polymorphic electronics [5] determines, in its own essence, a standalone category of reconfigurable circuits, which represents a highly appealing prospect how to implement all the required functional properties in a resource-efficient way. In the case of these circuits assuming the principles of polymorphic electronics, various modifications in the key physical characteristics of building components (eg in a transistor's operation point, usage of ambipolar charge carrier conductivity) are predominantly involved behind the change of their behaviour as a straight response to the influence of external stimuli -temperature, power supply voltage, light intensity, special signal, etc.…”

“…Needless to say, also the original concept of polymorphic electronics emerged virtually as a side effect of evolutionary design experiments [5]. Almost all polymorphic circuits, more complex than just a few gates, have been designed using Carthesian Genetic Programming (CGP) [10] till now.…”

“…A special case related to these multifunctional circuits is based on the adoption of the polymorphic electronics paradigm [5]. From the technical perspective, circuits with these attributes typically change their function in accordance with the actual state of the target operating environment.…”