1. Lecture No. 27
Sequential Logic

2. Recap 555 Monostable, Astable Timing problems (hold time)
Clock Skew (clock delay)
Race Conditions

3. Recap Asynchronous Counters Mod-n Counters Decade Counter
Propagation delay
Propagation Delay at high frequency
Mod-n Counters
Decade Counter
Integrated Circuit 74LS93A counter
MOD-16 and Decade Counters
MOD-50 Counter

4. Asynchronous Counters
Down Counters (fig 1)
Down Counter with truncated sequence (fig 2)

5. Synchronous Counters Synchronous Counter (fig 3)
3-bit counter (fig 4)
4-bit counter (fig 5)
Synchronous Decade Counter (tab 1 fig 6)