申論題

Problem 4](20%) What are two common storage elernents in a sequential circuit? (4%) What are the differences between the operation conditions of these two elements? (4%) Give some waveforms to explain the meaning of the setup time and the hold time constraints in a synchronous sequential circuit. (6%) Give a general structure of a synchronous sequential circuit and use this structure to explain how the maximum operating frequency of a synchronous sequential circuit is determined. (3%) How can the maximum operating frequency be increased? 3%