-
OLED screen
OLED (Organic Light Emitting Diode) is fundamentally different from the traditional LCD display mentioned above. It does not require a backlight source, but uses a very thin organ...[Details]
-
I recently wanted to write a program using an STC microcontroller, but STC was not in the KEIL microcontroller library, so I just found a replacement. However, the Keil I found did not add the StartUp...[Details]
-
An electromagnetic relay is an electrical component that controls the current of an electromagnet in a circuit to switch the circuit. It is usually composed of an electromagnet, a spring, contacts,...[Details]
-
At the press conference on March 28, Xiaomi CEO Lei Jun officially announced the prices of various versions of Xiaomi SU7. At the same time, Lei Jun announced the special launch of 5,000 Xiaomi SU7...[Details]
-
It is very convenient to use an electric lock to open the door from a distance. The rated voltage of the working coil of this lock is DC12V, the DC resistance is about 2Ω, and the working current i...[Details]
-
I have published an article How to debug u-boot on csdn. The article has limitations because it comments out the code loading (moving code from nand flash to SDRAM) part. This article is to discuss...[Details]
-
On April 15, Weilan Technology released its 2020 annual report, stating that the company achieved operating income of 19.824 billion yuan, a year-on-year increase of 45.43%; the net profit attributab...[Details]
-
Common methods of displacement measurement include image analysis, dual-frequency laser measurement, grating or magnetic grating measurement, magnetoresistance or magnetic field measurement, etc. Amo...[Details]
-
The power rectifier circuit of this machine is shown in Figure a below.
The circuit is powered by the filament transformer B2, the secondary high voltage transformer B1 and the large hi...[Details]
-
The various parts of digital TV CA are closely connected together. Once a part has problems, the others will also be affected.
The cracking of CA starts from partial cracking unt...[Details]
-
According to statistics from the Consumer Technology Association (CTA), since July 2018, the Trump administration's "301 Act" on Chinese products exported to the United States has caused the United S...[Details]
-
Is aux mono or dual channel?
Aux is not the format of the audio signal, but a common name for the audio input and output interface. Therefore, it can be either mono or dual channel, depending ...[Details]
-
At this year's Google I/O conference, Google introduced the new version of the Android Q operating system's support for foldable screen phones. Android Q takes advantage of the natural properties ...[Details]
-
Note: When measuring, place the pointer at 2/3 of the full scale for the highest measurement accuracy. If the range of the voltage to be measured is unknown, use a higher limit to measure the approxi...[Details]
-
Flexible wearable electronic devices are mainly composed of flexible piezoresistive sensor materials, flexible sensor frames, electrode connections, and signal acquisition and processing circuits...[Details]