文档介绍：1-1 1-1 Copyright ? 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Chapter 1: Data Storage ? Bits and Their Storage ? Main Memory ? Mass Storage ? Representing Information as Bit Patterns ? The Binary System 1-2 1-2 Copyright ? 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Chapter 1: Data Storage (continued) ? Storing Integers ? Storing Fractions ? pression ? Errors 1-3 1-3 Copyright ? 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Bits and Bit Patterns ? Bit( 位): Binary Digit (0 or 1) ? Bit Patterns are used to represent information. – Numbers – Text characters – Images – Sound – And others 1-4 1-4 Copyright ? 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Boolean Operations ? Boolean Operation( 布尔运算): An operation that manipulates one or more true/false values ? Specific operations – AND – OR – XOR (exclusive or) – NOT 1-5 1-5 Copyright ? 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Figure The Boolean operations AND, OR, and XOR (exclusive or) 1-6 1-6 Copyright ? 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Gates ? Gate( 门): A device putes a Boolean operation – Often implemented as (small) electronic circuits – Provide the building blocks from which computers are constructed – VLSI (Very Large Scale Integration) 1-7 1-7 Copyright ? 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Figure A pictorial representation of AND, OR, XOR, and NOT gates as well as their input and output values 1-8 1-8 Copyright ? 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Flip-flops ? Flip-flop( 触发器): A circuit built from gates that can store one bit. 1-9 1-9 Copyright ? 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Figure A simple flip-flop circuit 1- 10 1- 10 Copyright ? 2008 Pearson Education, Inc. Publishing as Pe