Introduction

By now you are aware of the basic configuration of computer systems, how the data is represented in computer systems, logic gates and combinational circuits. In this unit you will learn how all the computations are performed inside the system. You will come across terms like flip flops, registers, counters, sequential circuits etc. Here, you will also learn how to make circuits using combinational and sequential circuits.

Objectives

After going through this unit you will be able to:

• define the flip-flops and latch;
• describe behaviour of various flip-flops;
• define significance of excitation tables and state diagrams;
• define some of the useful circuits of a computer system like registers counters etc.; and
• construct logic circuits involving sequential and combinational circuits.