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Reading: Chapter 2 (2.1-2.4), APPENDIX C
Powerpoint
slides for Chapter 2
Lecture
This chapter introduces the activities of a computer's CPU. It
describes the machine cycle executed by the control unit and the various
operations (or, and, exclusive or, add, shift, etc.) performed by a typical
arithmetic/logic unit. The concept of a machine language is presented in terms
of the simple yet representative machine described in Appendix C of the text.
The optional sections in this chapter present a
more thorough discussion of the instructions found in a typical machine language
(logical and numerical operations, shifts, jumps, and I/O
communication), a short explanation of how a computer communicates with
peripheral devices, and alternative machine designs.
The machine language in Appendix C involves only direct and
immediate addressing.
However, indirect addressing is introduced in the last section (Pointers in
Machine Language) of Chapter 8 after the pointer concept has been presented in
the context of data structures.
Practice (Applets
developed by OSU Department of Computer Science)
Try to run one of the applets below. If the applet fails
to run, you may need to download and install the Java runtime environment.
Here is a link to the
Sun Microsystems Web site that contains the J2SE Runtime Environment (JRE) that
allows you to run Java applications. When you go to this page, click on
"Download J2SE JRE" and follow the directions to download just the runtime
environment. Alternatively, you may click on "Download J2SE SDK" and follow the
directions to download the entire J2SE Software Development Kit. (You don't need
both.)
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