In later generations, due to the large and complex applications and the complexity of functional testing, it was difficult for testers to organize scientific and comprehensive test cases. Pen % fun % Pavilion www.biquge.info

In order to ensure that the testing work is carried out scientifically, accurately, comprehensively and in an orderly manner, the development of large-scale software generally adopts the strategy of testing while developing, so that the development work and the testing work are carried out in parallel, which is the saying "the earlier the test, the better".

Even the testing process has a complete set of steps.

However, in this era, a large program adds up to a few hundred kilobytes in total, and the super-large programs calculated in MB are all those that kind, and Yang Weining's CAD software testing naturally does not need to be so cumbersome in later generations.

Yang Weining turned on the operating system of the DJS-130 computer, loaded the software, and said with a smile to the people gathered around him to watch the test: "Hello everyone, it's a pleasure to see you again, a month ago, I made a military order in front of you, saying that CAD software will be produced within a month, and today is the day to test the results." I have done a white-box test just now, and I have fixed a few small bugs, so I can say that this software runs without problems. ”

"Here, I would like to express my gratitude to Director Lu Wenjun, Professor Xia Peisu, and Director Gu Pei of the Computer Center for their full support to my work. ”

Lu Wenjun, Gu Pei and others looked at each other and smiled, Yang Weining said this so that they benefited a lot, when Yang Weining proposed to develop CAD software, most of the people present were not confident, Gu Pei even made it difficult for Yang Weining, who would have thought that this kid would make such a big name in less than a month.

To this day, even if they haven't seen what Yang Weining's development of this CAD software looks like, they have no doubts in their hearts about whether Yang Weining can develop it successfully.

"Okay, without further ado, let's start testing the functionality of the software. ”

Yang Weining said with a smile.

As the software was loaded, the 18-inch CRT monitor soon appeared with the English logo of "AUTOCAD" in white letters on a blue background, and then, the screen jumped, and a white curtain appeared on the screen.

Yang Weining smiled: "I have named this software AUTOCAD software, it has a number of functional modules, and I will demonstrate the 2D drawing function of this software to you." The so-called 2D drawing is to draw engineering drawings on the plane through wireframes, curves and other functions, and provide a complete set of tools for text, dimensioning, customized standards, 2D parameterization and 2D browsing. Well, so let's do that, what kind of drawing you want to draw, I can show you right now. ”

Seeing that everyone didn't speak, Lu Wenjun smiled and said, "Wei Ning, in this way, you can draw a simple hexagonal bolt three views." ”

People can't help but be slightly stunned, in the machinery industry, hexagonal bolts are widely used, but the hexagonal bolts can only be drawn in proportion, inexperienced people are easy to cause errors, draw such a picture, it can be said that it is a great test of the engineering drawing skills of mechanical engineers.

However, Yang Weining didn't care, and said with a slight smile: "Okay, then draw a hexagonal bolt." ”

Yang Weining skillfully operated the mouse, clicked on the edit bar, selected the regular hexagon, and then drew the main view and left view of the regular hexagonal prism on the screen with 2D as the diameter.

Because when manufacturing hexagonal nuts, often make 30 degrees inverted, so that the six edges intersect with the conical surface, thus forming the intersection line of the hyperbolic shape on the side of the regular hexagonal prism, for the sake of simplicity when drawing, the arc can be used instead of the hyperbola.

But Yang Weining didn't do this, but clicked on the edit bar, selected the hyperbola tool, and completed the tangent of the 30-degree chamfer and hyperbola on the screen.

Immediately after, he demonstrated the drawing tools such as ellipses, straight lines, and curves, and soon, a main view of a hexagonal bolt appeared on the screen.

Then, Yang Weining successively completed the creation of the left view and the top view, and then marked various size information on it, and it took less than ten minutes to complete a simple hexagonal screw orthographic projection drawing.

Everyone present was stunned, knowing that even a mechanical engineer with a lot of experience in drawing would take at least an hour to accurately complete three views of a hexagonal bolt.

But how long did Yang Weining take?

Less than ten minutes!

Most of the people present had worked in aviation all their lives, but it was the first time that mechanical engineering drawing was so simple and interesting.

Before that, most of them only heard of computer-aided design, but they didn't have a clear idea of what this aided design was.

Even Lu Wenjun, Chen Liangwei, and Kuang Shilin, who have gone abroad and seen CAD software, are only a general impression, but the specific details of CAD software are not very clear.

Yang Weining's operation today really opened everyone's eyes.

Lu Wenjun's eyes flashed with a hint of excitement, a few years ago he and the leaders of the Ministry of Aviation Industry went to the United States to visit, and the Americans also demonstrated in front of Chinese aviation engineers like this.

At that time, they were shocked.

Who would have thought that a few years later, the Chinese would write such a software with their own wisdom.

Lu Wenjun couldn't help but take the lead and began to applaud, and soon, the applause resounded throughout the room.

Waiting until the applause quieted down again, Lu Wenjun smiled and said: "Xiao Yang, you really gave us a surprise, the demonstration just now is very good, our drafting engineers are really blessed, if this software can be promoted, how much work can it reduce us, not to mention the promotion of the project progress, Xiao Yang, this time you have really made a great contribution." ”

Yang Weining smiled and said, "Director Lu, I just demonstrated the basic drawing functions of AUTOCAD just now, and then let's take a look at other functions of this software." ”

Lu Wenjun was slightly stunned, and wondered: "What, this software has other functions?"

Yang Weining said proudly: "That's natural, 2D drawing is just the basic function of AUTOCAD, if you only develop such a small function, give me a day or two is enough, I haven't been in vain this month, there are many functional modules of this software." ”

Everyone present couldn't help but look at each other, just a demonstration of a 2D drawing function has made everyone stunned, this other function, how against the sky?