26.06.2015 Views

Computer Architecture and Organization Chapter 5 ... - IIUSA

Computer Architecture and Organization Chapter 5 ... - IIUSA

Computer Architecture and Organization Chapter 5 ... - IIUSA

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

5-3 <strong>Chapter</strong> 5 - Datapath <strong>and</strong> Control<br />

The Fetch-Execute Cycle<br />

• The steps that the control unit carries out in executing a<br />

program are:<br />

(1) Fetch the next instruction to be executed from memory.<br />

(2) Decode the opcode.<br />

(3) Read oper<strong>and</strong>(s) from main memory, if any.<br />

(4) Execute the instruction <strong>and</strong> store results, if any.<br />

(5) Go to step 1.<br />

<strong>Computer</strong> <strong>Architecture</strong> <strong>and</strong> <strong>Organization</strong> by M. Murdocca <strong>and</strong> V. Heuring<br />

© 2007 M. Murdocca <strong>and</strong> V. Heuring

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!