Starting from the universal entropy bounds suggested by Bekenstein and
Susskind and applying them to the black-body radiation situation, we get a
cut-off of space Δx≥χlP​ with χ≥0.1. We
go further to get a cut-off of time Δt≥χlP​/c,
thus, the discrete space-time structure is obtained. With the discrete
space-time, we can explain the uncertainty principle. Based on the hypothesis
of information theory and the entropy of black holes, we get the precise value
of the parameter χ and demonstrate the reason why the entropy bounds hold.Comment: 9 latex pages, no figure, final version for journal publicatio