In the early years, when we were still in college, we began to make some simple but interesting things. For example, the followings are programmable power supply, high-frequency signal generator, oscilloscope, LC tester and so on.
Today, we have a professional laboratory, and many professional software and tools for machinery and circuit designs. Most of the crude production and prototypes no longer exist, but they are a review and remembrance of those earlier years.
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