This article is original by purplesword (jzj1993). For more information, see. Original web site http://blog.csdn.net/jzj1993
Everyone has used calculators. Have you ever wondered how they are implemented? Here, I will not elaborate on the principle of the calculator, but will just give a brief introduction to the idea. After learning the microcontroller, you can also create a calculator. What should I do if I use a circuit for mathematical calculation? For ease of understanding, the following
Circuits
Time Limit: 30000/15000 MS (Java/others) memory limit: 32768/32768 K (Java/Others)Total submission (s): 381 accepted submission (s): 128Problem description given a map of N * m (2 Last cell. Each cell shocould be exactly in one circuit. How many ways do we have?
Input the first line of input has an integer T, number of cases.For each case:The first line has three integers n m K, as described above.Then the following n lines each has m charact
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Frequency Division of high-frequency circuits and low-frequency circuitsHigh-Frequency Division:Extremely low frequency elf less than 3 kHzVery Low Frequency VLF 3-30 kHzLow Frequency lf 30-300 kHzMedium Frequency MF 300-3 MHzHigh-frequency HF 3-30 MHz300 MHz (Television 1---12 channel)Ultra high frequency UHF 300-3 GHz (TV with 13 channels or above)Uhf shf 3G-30 GHzIt is also divided as follows:Frequency is divided according to regulations
Yi Wei public platform interface dummies tutorial, Yi Wei micro dummies. Yi Wei public platform interface dummies tutorial, Yi Wei micro dummies Yi Wei public platform interface dummies tutorial part of content: Interface 9 hyperlink. rmvb interface 8 music information. rmvb
a testing tool is introduced that is not supported by people. People should see the need to improve a specific process, and be aware that the introduction of a specific test tool may ultimately help to accomplish their work more efficiently. If an organization does not sort these three points in order, the sentence "with the test tool, dummies are still dummies" will come true. Or in other words, an organi
introduced that is not supported by people. People should see the need to improve a specific process, and be aware that the introduction of a specific test tool may ultimately help to accomplish their work more efficiently. If an organization does not sort these three points in order, the sentence "with the test tool, dummies are still dummies" will come true. Or in other words, an organization that only i
C-language dummies (1): nested loops-program structure, dummies
Loop statement nesting a loop structure can contain another loop, called loop nesting, or multiple loops. The nested loop is a double loop. The outer loop is called an external loop, and the inner loop is called an internal loop. --------- I don't know where the basic concepts come from
This is the first blog of the baby. I will not ask fo
TCP features connection-oriented, reliable transmission, error control, and traffic control. TCP data transmission is based on virtual circuits.
The communication channel established for connection-oriented sessions is naturally logical and often referred to as virtual circuit. It is concerned with endpoints. Compared with finding an actual physical path on the network, this channel is more concerned with maintaining the connection between the two en
the file from the remote host to the local computer16: File Download successful17: If you want to modify the information of the account (such as: Rename the account name, delete the account, etc., do not forget to save), you can follow the following to enter the change account interface18: Select the corresponding account-right--select the corresponding action19: This is the part of the help document about creating new accounts and modifying accounts, want to know more about the content, it is
Capacitors are almost indispensable energy storage components in electronic circuits. They have the characteristics of isolating DC, Connecting AC, and blocking low frequency. It is widely used in coupling, isolation, bypass, filtering, tuning, energy conversion, automatic control, and other circuits. Familiarity with the name and meaning of capacitors in different circ
This is an article by Qi dongjie, an intern in the Internet Data Management Group of Microsoft Asia Research Institute.
Article , Copied from the "Microsoft Asia Research Institute blog ". Although many of us will not do research for application development in the future, many of Dr. Ma's views are still very helpful to us, so I would like to repost and recommend it to you. In fact, Microsoft's Asia Research Institute blog has many excellent ideas that are very unique. It is recommended that yo
new technologies are constantly emerging. These capabilities did not appear out of thin air, but were learned purposefully and targeted based on the accumulation of basic knowledge.
Chapter 1 Basic knowledge of computer circuits
(1) Summary
1. Basic Physical Quantity of the circuit: ① current ② voltage ③ power
2. Two types of constraints of the circuit: ① the volt-ampere relationship of the component ② kierhov's law (related to the circuit
In electronic circuits, power supply, amplification, oscillation, and Modulation circuits are called Analog Electronic Circuits because they process and process continuously changing analog signals.
1. Feedback
Feedback refers to sending output changes to the input end in some way as part of the input. If the return part and the original input part are subtracted
label: HTTP ar Div 2014 sp c ef r bs As an electronic engineer, have you really mastered analog circuit technology? The knowledge of analog circuits is divided into three levels: elementary level, intermediate level, and advanced level. Level 1: Be familiar with the 20 circuit diagrams and understand the functions of these circuits. As long as you are an automation, electronics, and electronic control profe
clock edge. An asynchronous reset is a reset signal that is valid and clock independent.The difference between synchronous and asynchronous logicSynchronization logic is a fixed causal relationship between clocks. Asynchronous logic is the absence of a fixed causal relationship between clocksSynchronization circuit and asynchronous circuit differenceSynchronous circuits have a unified clock source, the PLL-divided clock-driven module, because it is a
I will upload my new book "self-writing processor" (not published yet). Today is the fifth article. I try to write this article every Thursday.
Based on the introduction in the previous chapter, you should know that the CPU has some basic circuits, such as decoding circuit, calculation circuit, control circuit, and some registers. How can these circuits be implemented? Of course, it can be achieved through
In Tor system source code, there are three files used to control the link circuit: circuitlist. C, circuituse. C, and circuitbuild. C. The processing functions of these three files are similar to those of their names, namely, the Organization, use, and creation of the processing links respectively. In this article, we will only introduce global variables mainly used for links, that is, the use of global variables in these three files. The link functions are not listed here, because there are a l
the main backplane, resetting multiple neighboring modules in the system and destroying the module's connectors.This problem can be solved by the hot-swap controller (Figure 1), the hot-swap controller can control the inrush current reasonably, and ensure the safe power-on interval. After power-on, the hot-swappable controller also continuously monitors the supply current, avoiding short circuits and overcurrent during normal operation.Figure 1 Hot-s
Let's take a look at some interesting "lie detector" small circuits, which are the principle of detecting the skin resistance between fingers.Lie detector circuit 1The circuit detects the resistance between your fingers to produce oscillations. Dry fingers will detect a resistance of up to 100,000 ohms, which will make the circuit sound at low frequency oscillation. If the subject is nervous, he sweats, which lowers the skin's resistance and causes th
Crazy Circuits
Question:
A circuit board is provided, starting from the + pole to the negative pole. Now, the minimum current limit on the circuit board is required to obtain the minimum current starting from the positive pole when the current is balanced.
Algorithm:
A very bare minimum stream with a source sink. First, find the maximum stream. Then, by adding t --> S capacity INF, it becomes a problem of the minimal stream with no source sink, so t
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