[Pg.294]

The truth tables of two Sblocks. (Haddow, P.C. and Tufte, G. [2001] Bridging the genotype-phenotype mapping for digital FPGAs. In proceedings of the Third NASA/DoDWorkshop on Evolvable Hardware, IEEE Computer Society.)... [Pg.295]

Fig. 22 (a) Model system able to perform six different logic functions depending on its structural parameters e and k. Current intensity passing through this system for e = k = 0 eV, v = 5 meV, and a and [1 going from 0 to 1 eV. The variation of the current respects the XOR truth table a strong current is obtained for = 0=1 and =1 = 0 and a weak one for = 0 = 0 and =1 = 1. Due to the stable plateaux at the comers of the map, this device naturally corrects small deviations in the inputs that lead to even smaller deviations in the output... [Pg.251]

Fig. 26 (a) The chemical structure of the molecular half-adder. The conformation of each N02 group encodes the logic input while the output status is encoded in the resistance between the drive and the output nano-electrodes. The complete truth table for the XOR and the AND outputs. Note the difference in magnitude between the XOR 1 and the AND 1 . (b) The T(E) spectra of the junction represented in Fig. 26 for all the logic inputs (solid line). Each inset emphasizes the modification of the conductance near the Fermi energy of the molecule. Each T(E) spectrum had been fitted in the active area to determine the minimum number of quantum levels required to reproduce it (dashed line)... [Pg.257]

Logic Gates a Supramolecular Systems a Truth Tables a Photoinduced Electron Transfer a Molecular-Level Devices... [Pg.307]

Figure 2. (a) Electronic representation, (b) truth table, and (c) molecular implementation of YES (PASS) logic. 0 and 1 are digital representations of low and high signal levels respectively in all Figures. [Pg.309]

AND gate 4 differs from 3 in several aspects of performance and design. Experimentally, 4 produces a virtually perfect truth table The output logic 1 state has a fluorescence quantum yield (< >f) of 0.22 and the three logic 0 states do not rise above a cj>f value of 0.009. A fluorescence enhancement (FE) factor exceeding an order of magnitude such as this is a joy to work with since the switching phenomena are so clearly visible. [Pg.311]

Figure 5. (a) Electronic representation, (b) truth table and (c) molecular implementation of XOR logic. [Pg.312]

Logic gates are devices that can perform basic logic operations, depending on the nature of the input and output signals. The relation between the inputs and outputs is summarised in the truth table of the logic gate. [Pg.234]

For example, the AND logic gate has two inputs and one output. The truth table for the AND gate is shown in Table 12.4. [Pg.234]

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