CS251 : CS251-PPT#3-W13.pdf
Document Summary
[with material from computer organization and design by patterson and hennessy, and digital design and. Computer architecture by harris and harris, both published by morgan kaufmann] Sequential logic circuit it has memory. Outputs of a sequential logic circuit depend on the current and i i th the prior input values t l. All the information about a circuit necessary to explain its future. All the information about a circuit necessary to explain its future behavior. State elements that store one bit of state y. Combinational logic followed by a bank of flip-flops q. Use feedback from output to input to store information. The state of a circuit influences its future behavior. Fundamental building block of other state elements. Q = 0: then q = 1, q = 0 (stable) Q = 1: then q = 0, q = 1 (also stable); hence, called bistable. Stores 1 bit of state in the state variable, q (or q)
