A flowchart is a common tool for describing algorithms, what is the symbol used to represent a judgment?

Prisms.

Process is in order to meet the specific needs of a logical process of operation, flowchart is a relatively casual piece of chart, there is no specification, there is no fixed method of drawing, can only be based on the things on the flowchart. Diagram is the basic solidification of the process with a certain degree of regularity for manifestation and written, thus facilitating the dissemination and precipitation, process reorganization reference.

Extended information:

Note:

When drawing a flow chart, it is necessary to Distinguish the descriptions of business, function and page clearly to avoid mixing different types of flowcharts together.

Drawing flowcharts generally follow the structure from top to bottom, from left to right, from the overall mainstream process to the local branching process, for example, when drawing flowcharts, first sort out the normal process (the main process), and then consider judging the inverse process in the logo (branching process).

The path of the flow chart needs to have a beginning and an end, forming a closed loop. There can not be a step in the interruption of the situation can not find a solution.

Baidu Encyclopedia - Flowchart