-
When the switch SP1 is pressed, the AT89S51 microcontroller generates a "ding dong" sound which is output from the P1.0 port to the LM386 and then sent to the speaker after being amplified.
1. ...[Details]
-
;I just saw a question on Baidu Knows: http://zhidao.baidu.com/question/439326240.html ;In the blink of an eye, I found that my baby was gone again. Baidu is really unpredictable. ;Haha, by doing th...[Details]
-
This paper discusses a power supply system for argon arc welding machine. This system solves the problems of arc starting difficulty and low current control accuracy existing in existing welding ...[Details]
-
The figure shows a high-voltage inverting amplifier circuit composed of 1/4 current-type operational amplifier FX3401. The circuit input voltage is 0~10V, the output voltage is 0~300V, and the gain i...[Details]
-
DSP peripheral memory marching test technology based on navigation receiver
DSP is the core of digital computing in electronic systems. The correctness of the data it operates is the basic...[Details]
-
The sine wave control of the brushless DC motor is to generate a sinusoidal current in the motor winding by applying a certain voltage to the motor winding, and to control the motor torque by contr...[Details]
-
With the advancement of science and technology, multimedia teaching equipment has become an indispensable tool for modern teaching and many conference venues. Multimedia mathematics equipment is gener...[Details]
-
November 19, 2019, Shanghai, China – Magic Vision Intelligent Technology, a leader in embedded artificial intelligence autonomous driving, announced the official launch of a new adaptive front-mount...[Details]
-
Lpc1768 has a built-in AD peripheral, which has eight multiplexed inputs, so it can connect eight AD devices at the same time. It also supports trigger conversion mode, which is triggered by the ext...[Details]
-
Due to its thinness, lightness and low power consumption, LCD has been widely used in industrial and civilian fields such as computer monitors, VCD display panels, and portable medical equipment. Amon...[Details]
-
Local labels are mainly used in local scopes. They consist of two parts: a number from 0 to 99 at the beginning, followed by a symbol that usually indicates the scope of the local variable. The sco...[Details]
-
Wang Huilian, director and general manager of Xiamen Semiconductor Investment Group, delivered a speech entitled "Exploring a semiconductor industry path suitable for national conditions and developm...[Details]
-
To do the 2440 interrupt experiment, you must first understand the ARM interrupt architecture. The ARM system CPU has seven working modes. They are:
User mode (usr): The normal program execution stat...[Details]
-
The closed-loop servo system is a high-precision, high-response speed control system widely used in industrial automation, robotics, aerospace and other fields. The closed-loop servo system consist...[Details]
-
Abstract: The snubber circuit parameter values play a vital role in the turn-off performance of GTO and the working performance of the entire GTO inverter. This paper analyzes the anode current...[Details]