SOEN 228 Lecture Notes - Lecture 3: Sequential Logic, Sequential Circuits, Clock Signal
5 Feb 2018
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Document Summary
These review notes are not intended to replace your own note taking. Writing your own notes in your own words is a valuable learning tool and is also often required at the workplace (where it is called documentation). In addition, writing notes often helps both the learning process and the duration that material stays in memory. Think of note taking as early exam preparation. In the third week we discussed the principles behind state machines by developing a binary counter. The binary counter uses the present value (state) and input signals to determine the next value (next state). So using a three bit counter the values range from zero (the three flip flips are set to hold: 0 0 0) to seven (the three flip flips are set to hold: 1 1 1 ). The circuitry used to control the transitions between states is a binary adder circuit. There is one binary adder per flip flop used in the counter.
