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How to use the schematic diagram

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In this lesson, we mainly study the common numbers in the schematic diagram and the meanings of the toolbar

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The schematic diagram reflects the physical connection relationship between the components on the circuit board

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The schematic diagram will contain informations such as models of the electronic components,

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the pins and some parameters of the pins

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The schematic will draw each component as a separate block

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The schematic diagram has many page numbers,

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for example, there are 80 pages, 90 pages

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Each page introduces a single chip

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The component number in the schematic diagram is the same as the component number

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in the position diagram and the bitmap

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The chip starts with U, the interface starts with J,

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the transistor starts with Q, and the diode starts with D

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The crystal oscillator is represented by X or Y,

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the resistor is represented by R, the capacitor is represented by C,

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and the inductor is represented by L

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After opening the schematic diagram,

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we can see that there will be a toolbar above the schematic diagram

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There are some shortcut icons in the toolbar

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For example, the two icons identified by the letter A represent the rotation direction

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left rotation and right rotation

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The icon identified by the letter B is the page number of the drawing

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1 means that it is currently on the first page of the drawing,

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and 177 means that the drawing has a total of 177 pages

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The left and right arrows identified by the C letter in the toolbar

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represent the previous page and the next page of the drawing

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The two icons identified by the letter D in the toolbar,

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the one on the left represents continuous mode,

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and the one on the right represents single-page display

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The plus and minus signs identified by the E icon represent the zoom in and out of the drawing

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The F icon represents the search box,

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we can search the position number of the chip or search the signal in the schematic diagram

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G icon, the left and right triangle symbols represent the previous search result and the next search result

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The H icon in the toolbar stands for case matching

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After opening, when searching, it will only be displayed if the case matches

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We don't need to open it in normal use

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The I icon in the toolbar stands for Advanced Search

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If we enter the signal and click Advanced Search,

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the search results will be displayed in the list on the left,

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so that we can check which pages of the drawing the signal is connected to

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In use, hold down the left or right button of the mouse,

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and move the mouse to drag the drawing

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When double-clicking the signal name, the name will be automatically pasted into the search box,

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which is convenient for us to find the signal

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Ok, that's all for this video