PPT-Flip-Flops Reference: Chapter 5

Sequential Circuits Moris Mano 4 th Ediditon Revision Types of Logic Circuits Combinational Logic Circuits Sequential Circuits Combinational VS Sequential Circuits Combinational Logic Circuits. http://www.comp.nus.edu.sg/~cs2100/. Sequential Logic. (AY2015/6 . Semester 1). CS2100. Sequential Logic. 2. WHERE ARE WE NOW?. Number systems and codes. Boolean algebra. Logic gates and circuits. Simplification. 0 0 0 0 0 0 1 1 0 1 0 0 0 1 1 0 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 0 T flip-flop excitation table T Qcurrent Qnext 0 0 0 0 1 1 1 0 1 1 1 0 Step 2: derive the excitation table from the next stat Lecture 23. Announcements. Homework 8 due Thursday, 11/20. Exam 3 coming up on Tuesday, 11/25. Exam Topics. MSI Components: . Binary adders/. Subtracters. , Carry . Lookahead. Adder, Large High-Speed Adders, Decimal Adders, Comparators, Decoders, Logic Design Using Decoders, Decoders with enable input, Encoders, Multiplexers, Logic Design with Multiplexers.. 1. Flip-Flops. Last time, we saw how latches can be used as memory in a circuit.. Latches introduce new problems:. We need to know when to enable a latch.. We also need to quickly disable a latch.. In other words, it. Nelly . Altamirano. Bill . Bowker. Dmitriy. Novak. Vanessa . Graciano. Yiwen. Zhang. Main Points. Background facts. Do flip flops . in fact cause . car accidents?. Who is liable in this case?. Calculation of damages. Sequential Circuits. Part 1. KFUPM. Courtesy of Dr. Ahmad . Almulhem. Objectives. Sequential Circuits. Storage Elements (Memory). Latches. Flip-Flops. KFUPM. Combinational vs Sequential. A . combinational. Digital Computer Logic. Latches. S-R Latch. Gated S-R Latch. D Latch. RQ2011. 2. A . latch. is a temporary storage device that has two stable states (bistable). It is a basic form of memory. . The S-R (Set-Reset) latch is the most basic type. It can be constructed from NOR gates or NAND gates. With NOR gates, the latch responds to active-HIGH inputs; with NAND gates, it responds to active-LOW inputs.. Read . Kleitz. , Chapter 10.. Homework . #10 and Lab #10 due . next week.. Quiz . next week.. Combinational Logic versus Sequential Logic. A . combinational logic circuit. is a circuit whose output depends only on the circuit’s present inputs. (“Has no memory of the past.”). Register is built with gates, but has memory.. The only type of flip-flop required in this class – the D flip-flop . Has at least two inputs (both 1-bit): D and . clk. Has at least one output (1-bit): Q. Registers and Counters. A register is a group of flip-flops. Each flip-flop stores one bit of info. A counter is a register that goes through a predetermined sequence of binary states. Registers. 4-bit register with . Chapter 5. Synchronous . Sequential. . Logic. gürtaç. yemişçioğlu. OUTLINE OF CHAPTER 5. 23 December, 2016. INTRODUCTION TO LOGIC DESIGN. 2. Sequential. Circuits. Latches. Analysis of . Clocked. Announcements. Homework 8 due Thursday, 11/20. Exam 3 coming up on Tuesday, 11/25. Exam Topics. MSI Components: . Binary adders/. Subtracters. , Carry . Lookahead. Adder, Large High-Speed Adders, Decimal Adders, Comparators, Decoders, Logic Design Using Decoders, Decoders with enable input, Encoders, Multiplexers, Logic Design with Multiplexers.. Announcements. Homework 8 due today. Exam 3 on Tuesday, 11/25.. Topics for exam are up on the course webpage.. Agenda. Last time:. Master-Slave Flip-Flops (6.4). Edge-Triggered Flip-Flops (6.5). Characteristic Equations (6.6. Lecture. Digital Systems. All inputs that we have been studying in all the flip-flops (D, S-R, J-K, and T) are . synchronous. inputs because their effect on the FF output is synchronized with the clock input..