oscilloscope for dummies

BUG: A Part Of The programmer's life. They cannot leave each other and are not happy with each other. Maybe you have a wonderful life. Do you have any wonderful bugs? It has plagued me for almost two weeks. Let's just call it small A. Small A has never dared to face me, and she is escaping every day. Every time she passes by with it, she feels familiar with it, I also found that we are not familiar with it. Because of this, it can be proud for so long; and because of this, it can even get tired

; use ACM for voice compression and decompression; Use Winsock for network communication. The experimental program implements the basic functions of network voice transmission. The collection set and playback buffer in the program are of the same size, and the number is both 2. The experiment uses the ping-pong system. We have measured the relationship between the buffer size and the end-to-end latency in the Ethernet environment. The idea of end-to-end latency measurement is to run a program, i

technical master, but a general quality master! We often look down on people when we are in a company,He said, "I don't know anything. Why do I get so much money? Why do I get promoted !" This is a common example of engineer pedantic.Is 8051 awesome? People must have his skills, and you cannot.Do you think the boss has been operating for so many years? People may be good at management,Be good at understanding the boss's intentions, be good at department coordination, and so on. Therefore, you m

damage, can not be repaired, Another point is that your BIOS file must be consistent with your motherboard model, including the manufacturer and model, otherwise the refresh will often cause the phenomenon of not showing. Motherboard point does not light maintenance example Example 1. A pci1600-f motherboard is not lit. First of all, visual inspection, found that the Power control IC U24 (AIC1569) surface has burned traces, welding U24, check the peripheral circuit did not see abnormal. The b

parameters makes the code smaller, but the code loses some features, which is also a way to do it. Learning the impact of development boards Learn how to implement it Measuring measuring 1. The best instrument is an oscilloscope. 2. Test on the electrical start time, this is a very accurate way of testing. 3. It is very simple to write Gpio port and memory when the system starts. 4. Some oscilloscopes can afford it. 5. Usually you do not want to us

, short circuit. Next, use the oscilloscope (if not, only with a multimeter), measuring the power supply foot of the SD card seat. In general, the voltage value should be around 3.3V, if the difference is too large, may be a circuit error, or LDO power supply capacity is insufficient. If you confirm the above two steps, then the hardware is not a big problem. The next thing to confirm is the problem with the driver on the firmware. Generally speaking,

After reading the I2C official agreement document, take s3c2440 and EEPROM to verify it. Originally want to use s3c2440 SDA and SCL pin Gpio to simulate, but in the absence of an oscilloscope for a week, how can not come out, finally or give up. Even reference to Linux under the i2c-algo-bit.c and I2C-GPIO.C, Still not tuned out. If there is an oscilloscope, it may soon be possible to find the cause, and no

libraries implemented by Mock-python Ludibrio-Elegant Test doubles framework (mocks, stubs, Spy, and Dummies) implemented in Python. Responses-mock Request for Python Test ToolPak DoubleX-powerful Test doubles framework Freezegun-time travel through the mocking datetime module Httpretty-http The requested mock tool Httmock-requests's mock tool that supports Python 2.6+ and 3.2+. Pretenders-Fake server for tes

function object. This reference value is NULL in a global context scenario. Such a data structure constitutes a one-way list, each of which points to the outer context of the scenario.For example, the closure model of our example above should be this way, the SayHello function is at the bottom, the upper layer is the function greeting, the outermost is the global scene. For example: So when SayHello is called, SayHello will find the value of the local variable text in context, so the "Hello Clo

still on the sidelines, don't want to start now Windows Phone phone, then you can through the online video indirectly experience, here recommend a "read Windows Phone 7 Mango" video (English), a short span of 15 minutes to cover the live Tiles, contacts, messages, Multiple features such as Office, games, multitasking, Bing, and more. In addition, the official windowsphone.com also has very rich video and text content. If you like to read, here are the Windows Phone 7 Plain Simple and Windows

specification is being developed in an orderly fashion, and the efforts made by EJB specification organizations are obvious to make EJB development easier. As they say, everything is going to be easy, but it's not easy to do that. 50 annotation tags are currently defined (and several will be published in the next draft), each with its own default rules and other actions. Of course, I really don't want EJB3.0 to turn into a EJB2.1 "EJB 3.0 = EJB 2.1 for Dumm