8 Logic operations
8.1 Introduction
Study note: You may like to have the Numeracy Resource to hand as you study Section 15. It offers extra practice with the logic operations, and you may find this useful.
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In this section I shall briefly introduce four logic operations. They are all very easy to perform.
Logic operations provide a useful means of accessing and manipulating an individual bit, or several bits, in a binary word. For instance, they can be used to test whether a particular bit is 1 or 0, or to ensure that a particular bit has a pre-defined value irrespective of the value of all the other bits. You will see examples of the use of logic operations later in the course; but for the present you need to concentrate on what they are and how they work.