CAD problems ask for help!!

You switch to the latest version 9 software.

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2. The no-wiring area is (

layers, not prohibiting the placement of component layers).

3. Protel DXP is the latest version of the board design system produced by Altium.

4. In the schematic diagram, the command to draw the wire is (wire), and the use of placing the same name on the two connection points (net marker) can also make the two have an electrical connection relationship.

5. In the crosshairs command state of placing components, you can press the (tab) key to bring up the component properties dialog box, press the (space) key to rotate the component, and press the (x) or (y) key to flip the component mirror image with the corresponding coordinate axis.

6. Press the shortcut key (page up) to enlarge the drawing area with the cursor as the center.

7. When you need to change the shape of the power port, you can change the size.

8. If you need to change the port direction, it is not enough to adjust the port attribute settings, you must (the same type of attributes).

9. When designing the hierarchical schematic diagram, it can be designed (at the same time) or (separately).

10. The printed circuit board is divided into (signal layer) printed circuit board, (internal power supply layer) printed circuit board and (ground plane) printed circuit board according to the conductive board layer.

You're a mechanical designer, right?

Take the second one, GB70-66 . GB: national standard, national standard. 70: The standard code of hexagon head bolts. 66: Standard release year: 1966. M 10 25 is the specification of this bolt.

By analogy, the first one, 10, may be the diameter, or some other specification, GB1155-74, should be the national standard code GB1155-74 oil cup. The third, GB118-66 should be a molten iron ladle;

As for GB54-66, according to the following, square nut (rough) (GB39-76), hexagon nut (rough) (GB41-76), hexagon thick nut (GB55-76), hexagon extra thick nut (GB56-76), hexagon nut (GB52-76), hexagon flat nut (GB54-76).

Small hexagon nut (GB51-76) and small hexagon flat nut (GB53-76) are speculated to be the national standard code of the nut.

Because it's not a major, I hope it can help you.

It should be a bolt and nut code, and it's not particularly useful, so you just copy it down and type it.

Upstairs is right, it's all standard parts!