CSC258H1 Lecture 10: CSC258 Lecture 10 - Latches
Document Summary
We want to learn about what this means in circuitry. Combinational-output values are entirely dependent on present values of inputs. Sequential-outputs depend on present input values and the previous state of the circuit. Same input values can result in different outputs depending on the state. Sequential circuits are helpful because : memory(past inputs are remembered) and outcome depends on current and past inputs. Sequential circuits are a result of having feedback in the circuit. Outputs of a component or circuit is connected to its input. Is the time it takes for a change in input to produce corresponding change in output. Even in combinational circuits, outputs don"t change instantaneously. Qt and qt+1 represent values of q at time t, and a point in time immediately after (t+1) Qt+1 will be stuck at 0 and cannot change. Unlike and and or gate(which get stuck), output qt+1 can be changed based on a.
