  A procedure is described for storing a 2D pattern consisting of 32x32 = 1024
bits in a spin state of a molecular system and then retrieving the stored
information as a stack of NMR spectra. The system used is a nematic liquid
crystal, the protons of which act as spin clusters with strong intramolecular
interactions. The technique used is a programmable multi-frequency irradiation
with low amplitude. When it is applied to the liquid crystal, a large number of
coherent long-lived 1H response signals can be excited, resulting in a spectrum
showing many sharp peaks with controllable frequencies and amplitudes. The
spectral resolution is enhanced by using a second weak pulse with a 90 phase
shift, so that the 1024 bits of information can be retrieved as a set of
well-resolved pseudo-2D spectra reproducing the input pattern.
