cat6 diagram

operationAs stated above, although we do not need to write the smallest timings in each step. But know the next. will give you a clearer understanding of the underlying details of each procedure.Let's take a look at the timing of a command latch. That's what it says. There is not a write command step in the read NAND flash operation. So how does this step come true?First of all, we must choose NAND flash. It's only a chip to make him work.NAND Flash is through ale/cle ( active High ) to differe

I. Introduction to the methodology1. Definition: It is a method of analyzing the various combinations of input by means of graphic method to design the test case, which is suitable for checking the various combinations of the input conditions of the program. 2. Background of the cause and Effect diagram method:The equivalence class partitioning method and the boundary value analysis method all focus on the input conditions, but do not take into accoun

There are many types of UML diagrams, only two of the most important and common-class and time series diagrams are discussed here. 1. Class Diagram through the class diagram, we can easily understand the code architecture, clarify the relationship between the modules, includes inheritance (inheritance), implementation (realization), dependency (dependency), composition (composition), Aggregation (Aggregatio

ObjectiveIn my work, the most used is the time series diagram. Probably because of the work, I also like to draw time series diagram, very clear, very clearly, when to send what message, to what state, all of a sudden on the display in your mind, for the message-driven program, is no better.Introduction to timing diagramsFirst, time series diagrams are used to denote the order of behavior in a use case, whe

[Original] "function diagram" Method for Test Case Design Function diagram: The functional diagram method is actually a gray-box test (because it has both black and white-box tests, it is called the gray-box measure more considerate) case design method; generally, the function description of a program is composed of dynamic description and static description. it

Document directory Abstract: this is an article about the unified modeling language, that is, the basic diagram used in UML. In this article, I will discuss the structure diagram, which is a new graph type that has been proposed in UML 2. Since the purpose of this series of articles is to help people understand the mark elements and their meanings, this article mainly involves class diagrams. You wil

I've known for a long time that Microsoft's PetShop is very classic, yesterday took time to learn, at first really did not adapt to, what membership, really do not understand, run PetShop want to learn from the landing, but the user name and password are not known, and later found that there are more registered pages, I registered a page, only to find out from the database. It took so much time to finally go back to the database, but a table in the database of one of the tables can not find the

Introduction The learning of UML started on the 3rd and ended on the evening of the 13th. Today (Nov 14), I reviewed UML and refined the following learning tasks. The overall learning of UML is similar, but there are still many areas to be improved. Learning Process At the beginning of UML learning, I first spent half a day on the concept of UML. The main method is to query materials and watch books online, and then watch the UML video, during the watching process, I watched the video quickly. A

Most of the models in UML describe the logic and design information: Use Case chart to understand expectations Class diagrams can understand the Vocabulary (class and object) of the problem domain) The status chart, InterAction diagram, and activity diagram can be used to understand how the words in the class diagram are written (logical structure)An Implementati

I started to draw the UML diagram from June 1. Now it's over a month and a half! Let's talk about my feelings with UML diagrams over the past one and a half months: Phase 1: September 5-September 5 1. Example Diagram The use case diagram mainly refers to the functional model diagram of the system, and has the first dra

Sequence diagramA sequence diagram is a form of an interaction diagram that shows the evolution of an object along a lifeline, and the interaction between objects over time is expressed as a message from the source lifeline to the target lifeline. The sequence diagram is a good indicator of how those objects communicate with other objects, what messages trigger t

In This article, we focus on UML time series diagrams, which include modeling elements in the main sequence diagram: Objects (Actor), lifelines (Lifeline), Focus control (Focusofcontrol), messages (message), and so on. First, the UML sequence diagram Brief introduction (Briefintroduction)time series diagrams (Sequencediagram) are graphs that display the interaction between objects, which are arranged in

Activity diagram is one of the 5 dynamic modeling mechanisms of UML, is a process-oriented description, and describes the workflow of business use case implementation. The activity diagram is also a special example of the state machine, emphasizing the sequence and concurrency steps in the calculation process, where most of the state is active, and most of the transitions are triggered by the completion of

The e-r graph , also known as the entity-contact graph (Entities Relationship Diagram), provides methods for representing entity types, attributes, and connections to describe the conceptual model of the real world.1 , Presentation methodE-r is an effective method to describe the conceptual structure model of the real world. is a way to represent a conceptual model.(1) Rectangle: Indicates the entity type, the name of the entity is indicated in the re

UMLThe use case diagram is a very useful graph. In demand analysis, it can free people from the heavy documentation, in addition, it prompts people to express their meaning more accurately and intuitively when making demands. Common languagesThe word is often unable to express a thing clearly. At this time, it needs to be expressed in other ways. The example graph is a good method, of course, the use case diagram