piezoelectric wafer

As a member of the electronics industry chain, both chip designers, producers, testers and users are interested in knowing exactly what parts of a chip the cost is. Here I would like to briefly explain my understanding.On the big side: the cost of the chip itself, the costs of the chip design process, the equipment and the development environment required for non-disposable chip design. first, focus on the cost of the chip itself This part is mainly made up of the area of chip monolithic Th

Android deep exploration and HAL-driven development (Volume 1)-Chapter 8: android-driven developmentBuzzer type and working principle The buzzer also becomes PWM (Pulse Width Modulation). The basic principle is to control the opening and stopping of the buzzer through the pulse. It is a very effective technology that uses the digital output of a microcontroller to control analog circuits. It is widely used in many fields such as measurement, communication, power control and transformation.There

to make it small and lightweight is the goal of people's constant efforts. The high frequency of power supply is one of the hot topics in the international power electronics industry. Power miniaturization and weighting are especially important for portable electronic devices (such as mobile phones and digital cameras. The specific methods to make the switching power supply miniaturized are as follows: First, high frequency. To achieve high power density of the power supply, the working frequen

Discussion on the understanding of PWM1. What is PWM?PWM (pulse width modulation) is a simple frequency conversion technology, is to change the pulse width to control the output voltage, by changing the period to control its output frequency. If it's not clear enough, well, let's take a look at the examples in our real life, why do we have to twist the fan, the speed of the fan will change; adjust the sound button on the radio and the size of the sound will change. It's still going to be a while

The buzzer also becomes PWM (pulse width modulation), the basic principle is to control the buzzer by the pulse to open and stop. It is a very effective technology to control analog circuits by using the digital output of the microcontroller, which is widely used in many fields such as measurement, communication, power control and transformation.So, we have to operate the buzzer, is through the setting of the tout[0] pin, will be set to the TOUT_0 function, by configuring the PWM waveform to ach

Now wireless control has become the mainstream of the field of electronic science, this time to teach you to do a mainstream mainstream-wireless control of the car, first to show you the final product demo Video:://v.youku.com/v_show/id_xmty2mzazndazng==.html?spm=a2h0k.8191407.0.0from=s1.8-1-1.2first, introduce the materials you need to use.:TPYBoardv102 Development Board two piecesCar Chassis OneLora Wireless module two piecesRechargeable Treasure One90,143 Pole Tube Two (why do you use it, bac

Because COB does not have IC sealed Leadframe (Guide frame), but uses the PCB to replace, so the PCB welding mattress design Handy is very important, and fihish can only use electricity plated gold or enig (isotopes leaching gold), whether the Gold line or aluminum line, Even the latest brass lines have problems that can't be beaten up.PCB Design requirements for COB The finished surface of PC board must be electric plated gold or enig, and it is thicker than normal PC board plated gold

Market research firm Gartner last week reported a 5.2% per cent decline in global PC shipments in the first quarter of this year, with declining corporate spending.In the first quarter, the volume of this wafer increased by 3%, but the average sales price of the wafer dropped by 3%, and the volume of Taiwanese chips dropped 16% from a year earlier, but the average sales price grew by 2%.For the first time i

How is a CPU and computer heart made? Silicon Wafer manufactured by Silicon Ingot Slicing 1. A large Silicon Single Crystal or ingot (purity 99.999999999%) is cut by a diamond blade to make a thin silicon wafer. 2. The surface of the silicon wafer is polished to make a mirror. Processing surfaces to manufacture Semiconductors 3. oxide films are g

expanding. In addition to the sensor can increase the sense of expression and user interaction these conceptual things. The application of the sensor on the game also becomes the new development direction. Just as the somatosensory device is rising in the game, the sensors will grow faster on mobile phones and tablets. Sensors are now used in games, health care, physical training, and many new applications.Thanks to the addition of sensors to smartphones, smartphones are becoming smarter. The a

One day, a customer reported that their new LG380 Board was not working properly. In addition, it is not normal to test several new proofing boards. Dizzy, view the schematic, no problem. Check the PCB. However, the obvious difference is that LG needs an external 48 MHz crystal oscillator to implement the USB function. Later, their engineers mentioned that the company's procurement had told him about the 48 MHz crystal oscillator, which he bought. So I guess the reason is that the USB is not wor

height/5 positionThe low point is the center y coordinate down, the height/5 positionIn the oscilloscope, remove the line at the beginning and end, and then split the data into two parts.One part is the coordinates to be drawn at the high point, and the other part is the coordinates to be drawn at the low point.With these two coordinates, you can draw vertical lines at the same time.Proportional adjustment is based on the oscilloscope value and the width of the control.CodeCopy codeThe Code is

at a MHz clock speed to execute an operation command is only half that of the 20ns running at a 50 MHz clock speed, and the natural operation speed is doubled. However, the overall running speed of the computer depends not only on the CPU computing speed, but also on the running status of other subsystems. Only when the clock speed is increased, the overall computer operation speed can be improved only when the operation speed of each sub-system and the data transmission speed between the sub-s

. VCC A: 1.65v ~ 3.6 v B: 2.7 V (2.5v ~ 2.9 V) C: 5.0 V (4.5v ~ 5.5 V) D: 2.65 V (2.4 V ~ 2.9 V) E: 2.3v ~ 3.6 v r: 1.8 V (1.65v ~ 1.95 V) Q: 1.8 V (1.7 V ~ 1.95 v) T: 2.4v ~ 3.0 V U: 2.7v ~ 3.6 V: 3.3 V (3.0v ~ 3.6 V) W: 2.7v ~ 5.5 V, 3.0v ~ 5.5 V 0: None 9. Mode 0: normal 1: Dual nce dual R/Nb 4: quad nce single R/Nb 5: quad nce quad R/Nb 9: 1st block OTP A: Mask Option 1 L: Low Grade 10. Generation M: 1st generation A: 2nd generation B: 3rd Generation C: 4th generation D: 5th Generation 11

the hexcode of an MCU is read out, burning to another MCU cannot be verified by the decryption algorithm. The only way to decrypt it is to analyze your hexcode, analyze the encryption algorithm, and then design the same burner as you! In short, this method can only compare the larger program ROM has the effect, if it is a small MCU, such as only 1KB ROM is difficult to do, after all, the code is less, easy to analyze. To tell you the truth, if you have such an engineer to disassemble your code,

confidential data in the unlikely event of discovery. In 2008, a number of hospitals in Hong Kong and Macau had lost and stolen flash drives, causing a crisis in patient privacy. Similarly, shared or public computers are vulnerable to attackers using flash drives to put malware, such as rootkits or packet interception software. To prevent these issues, some organizations prohibit the use of flash drives, while others prohibit a general user from mounting USB mass storage devices (this is a feat

lifespan; CISC can run directly in memory5. Addressing is simplified, not as complex and numerous addressing methods as CISC First, background knowledge: The strength of the directive is an important indicator of the CPU, and instruction set is one of the most effective tools to improve the efficiency of microprocessors. From the current mainstream architecture, instruction set can be divided into complex instruction set (CISC) and thin instruction set (RISC) two parts. Accordingly, micro-proc

beginning and end, and then split the data into two parts. One part is the coordinates to be drawn at the high point, and the other part is the coordinates to be drawn at the low point. With these two coordinates, you can draw vertical lines at the same time. Proportional adjustment is based on the oscilloscope value and the width of the control.Code[Csharp]Int max = m_mappingDatas [m_mappingDatas.Count-1];M_Ratio = (max + m_mappingDatas [0] * 2)/m_width;// Draw

y coordinates, height/5.The lower point is the center y coordinates down, the height/5 positionPart of the oscilloscope is to remove the end of the line and then divide the data into two parts.One part is the height of the coordinates to be drawn, and the other part is the coordinates to be drawn for the low pointWith these two coordinates, we can draw the vertical line at the same time.The ratio is the use of the value of the oscilloscope, and the width of the control to make a proportional ad

enters the Chinese people, asks to return the information related to this collocation phrase. 41. Finding the Crystal Element Finder for solid crystal MachineThe wafer plate consists of an unknown number of crystal elements, which are not necessarily fully covered with the wafer plate, The camera each time this can match a crystal, if matched, then pick up the crystal,If matched, however, the camera is mov