20mhz oscilloscope

==================== Problem Description ====================Android Development Board in hand, mic recording Go is i2sI'm using the audio recording software provided by Android itself soundrecoder.apkWhen recording, the small pointer that detects the sound seldom shakes, when my voice is high, I can record it, the sound is smooth, and then a high or can record!The sound is intermittent, and it's very nasty!I use the USB interface of the camera to record, (because the camera also with mic, just

oscilloscope concept, in the actual Android-based application testing process, you can see in real-time from the program of various logical body execution rate, frequency and other information, Testers can convert from a traditional black box test of a tested application (which can only see feedback from the program) into an oscilloscope similar to a hardware test, enabling real-time analysis and viewing o

with capacitive coupling at the high impedance input and without DC access to the current at the same-phase input.　　 Figure 1: Error op amp ac-Coupled inputIn fact, the input bias current flows into the coupled capacitor and charges it until it exceeds the rated value of the common-mode voltage of the amplifier input circuit or limits the output. Depending on the polarity of the input bias current, the capacitor is charged to the positive or negative voltage of the power supply. The ampli

neighbor showed him a Tek oscilloscope in the garage, leading Jim himself to the world of analog circuits. Later he worked at MIT's lab to get a job as a technician. MIT, the name of the bull, explains what Jim was up to. His circuit design, hands-on ability, the ability to solve the problem of equipment is self-honed. later he came to Silicon Valley in the West Bank to join national as a analog circuit application engineer. National EM left the comp

These two days reviewed the DAC,DMA plus put the basic timer TIM6 and TIM7 looked, intends to write a comprehensive point of the program,, on the internet to find some about the DAC,DMA and timer related procedures, the final intention to write the output sine Wave program ...Because there is no oscilloscope, it will not show the effect, it is intended to use software debugging to see the effect, but TIM6 always problems, CNT does not self-increase, b

, whilePD0Output pulses with a period of3msTask 2：PD1Pin every3msFlip One levelTask 3：PD2Pin every3msFlip One level2.3Each task is a separate3msBe dispatched once, but they are spaced between each other1msis dispatched:Task 1Time of Operation:0, 3, 6, 9, ...Task 2Time of Operation:1, 4, 7, 10, ...Task 3Time of Operation:2, 5, 8, one, ...The scheduling time for 3 tasks is as follows:In other words, the sameMs, only 1 tasks are scheduled to run, which guarantees1msThere is very little time to run

comprehensive quality master! In the enterprise mix, we often look down on someone, said he "do not understand anything, why take so much money, with what promotion!" "It's a cliché of the typical engineer of the general. 8051 is it bull? Someone can go up there must have his skills, but you do not have the ability. You think, the boss has been running for so many years, don't you see the new recruit? Others may be good at management, good at understanding the boss intentions, good at departmen

technology with one mind! Put a lot of pressure on yourself. If you put all your thoughts on this, you will surely become a character like Kong Yiji! That's enough, because technology is only one of the pillars of your future, and it is not the biggest pillar, unless you are willing to be an old engineer! [3] Do not be a technical master, but a general quality master! When we are in a company, we often look down on someone and say, "I don't know anything. Why do we get so much money and why do

your future, and not the biggest pillar, unless you only want to be an old engineer!"3" Do not do technical master, only to do the comprehensive quality master! In the enterprise, we often despise someone, said he "do not understand anything, with what to take so much money, with what promotion!" This is the pedantic word of the typical engineer of the general. 8051 is it bull? Someone can go up there must be his skills, but you do not have the ability. You think, the boss has been operating fo

module removal (right), MCU for St company ultra-low power consumption stm8l151c8t6.2. Software platform:The development platform chooses the IAR integrated development environment, its specific model is as the right figure:3. Test tools:Ultra-high-precision measurement of low power consumption, need battery simulator, that thing is RMB more than 200,000 A; foreigners (such as the father of Contiki Adam Dunkels) often connect 100 ohm resistor, with an oscil