Abstract
The concept of hybrid in space-time Cellular Automata is introduced, for the first time, in this paper, and it is suggested that non-linear hybrid in space-time Cellular Automata can be used as pseudorandom pattern generators for VLSI systems, because they can produce patterns with various densities of “1”, distributed at will in space and time. The cycle lengths of non-linear hybrid Cellular Automata can be estimated using Lyapunov exponents.