Introduction to 80x86 Assembly Language and Computer Architecture, 3rd Edition

REPRESENTING DATA IN A COMPUTER

CHAPTER 1

1.1 Binary and Hexadecimal Numbers

1.2 Character Codes

1.3 Unsigned and Signed Integers

1.4 Integer Addition and Subtraction

1.5 Other Systems for Representing Numbers

1.6 Chapter Summary

When you program in a high-level language (like Java or C++), you use variables of different types (such as integer, float, or character). Once you have declared variables, you do not have to worry about how the data are represented in the computer. When you deal with a computer at the machine level, however, you must be more concerned with how data are stored. Often you have the job of converting data from one representation to another. This chapter covers some common ways that data are represented in a microcomputer. ...