I am a novice and recently bought a second-hand GOLDSTAR OS-9020A 20M oscilloscope online. The square wave display of the self-test shows overshoot. Is this normal? Will it affect normal use?...
Everyone, after I changed the TFT to vertical display, the entire touch screen became messed up. For example, I have to touch the touch screen far away from the BUTTON to press the BUTTON, drag the di...
When I woke up this morning and picked up my phone, I suddenly realized that it was already March. It felt like I had been in a daze for two or three months. It's time to get back to full health!...
Hello everyone, recently, I am writing an assembly program for an eight-way digital display buzzer with P0 connected to the digital tube segment selection, P2 connected to the bit selection, and P3 co...