The subject line is specific: the reader can tell at a glance that the memo reports on a trip to Computer Dynamics, Inc. If the subject line read only “Computer Dynamics, Inc.,” the reader would not know what the writer was going to discuss about that company.
The memo begins with a clear statement of purpose, as discussed in Ch. 5.
Note that the writer has provided a summary, even though the memo is less than a page. The summary gives the writer an opportunity to convey his main request: he would like to meet with the reader.
The main section of the memo is the discussion, which conveys the detailed version of the writer's message. Often the discussion begins with the background: the facts that readers will need to know to understand the memo. In this case, the background consists of a two-paragraph discussion of the two models in the company's 500 series. Presumably, the reader already knows why the writer went on the trip.
Note that the writer ends this discussion with a conclusion, or statement of the meaning of the facts. In this case, the writer's conclusion is that the company should consider only the external drive.
A recommendation is the writer's statement of what he would like the reader to do next. In this case, the writer would like to sit down with the reader to discuss how to proceed.