1Chapter 0Introduction to ComputingDr. L L ChengRoom: FYW 6306Phone: 27887755Email: [email protected]
2Objective•This chapter is let us to review the operation methodof computer, especially how does the CPU retrieveand execute programs.•If you do not familiar with the concept of a computer,then you should pay more attention to read thischapter and reply each Review Questions and all thesections of the PROBLEMS.–The answers of the Review Questions are at the back of theProblems.
3Section 0.1Numbering and Coding Systems
4Outlines of Section 0.1•Decimal and binary number systems•Converting between decimal to binary•Hexadecimal system•Converting between binary and hex•Counting in bases 10, 2, and 16•Addition and subtraction of hex number•ASCII codes•Please review the items if you have forgotten them.
5Section 0.2Digital Primer
6Outlines of Section 0.2•Binary Logic•Logic Gates - AND, OR, NOT, XOR, NAND, NOR•Logic design using gates•Decoders•Flip-flops•Please review the items if you have forgotten them.
9ROM v.s. RAM•ROM (read only memory)–ROM contains programs and information essential tooperation of the computer.–for permanent data which cannot changed by the user–called as nonvolatile memory–Data does not lost when power off•RAM (random access memory)–for temporary storage of programs that it is running–Data lost when power off–called as volatile memory
10Figure 0-9: Inside the Computer•Every computer can be broken down into threeparts ＝–CPU (Central Processing Unit)–Memory ＝RAM,ROM, etc.