Lecture 11: Sequential Circuits

• cours magistral
• mémoire
• exposé
• mémoire - matière potentielle : transfer
• mémoire - matière potentielle : s0s1s2
• mémoire - matière potentielle : hierarchy
• mémoire - matière potentielle : address
• mémoire - matière potentielle : overviewcomputers
• mémoire - matière potentielle : locations

COS126: General Computer Science • Lecture 11: Sequential CircuitsQSR 2 OverviewLast lecture: Boolean logic and combinational circuits.! Basic abstraction = controlled switch.! In principle, can build TOY computer with a combinational circuit.– 255 ! 16 = 4,080 inputs 24080 rows in truth table!– no simple pattern– each circuit element used at most onceThis lecture: reuse circuit elements by storing bits in memory.Next lecture: glue components together to make TOY computer.

• sample timing diagram for sr flip-flop
• flop
• bit counter
• register file implementation waddr clwritedata
• data input bit to output
• flip-flop
• toy
• main memory
• output
• computer