The 0,1 law in logical operation0 A ===> 01 a ==> a0 | | A = a1 | | A ===> 1By the above know any number with 1 phase or both is 1Any number with 0 and both is 0.Short-circuit operations occur only in logical expressions;In or operations, when the first expression is true (not 0), or the second expression of the operation does not operate, the whole is the value of the first expressionAt the time of the operation, when the first expression value is
Short-circuit operators are our common "", "| |", commonly referred to as "conditional actions."
Class logic{Public ststic void Main (string[] args) {int a=1;int b=1;if (aSystem.out.println ("Oh,that ' s Impossible!!!");}else{System.out.println ("That's in my control.");}}}
The operator checks whether the first expression returns "false" and, if false, the result must be "false" and no longer checks for additional conten
Recently made a mistake Test action:test Scenario: direct from the mains socket to access the 3W non-isolated switching power supply circuit board, using an oscilloscope to test the output voltage, when the oscilloscope through another outlet directly from the mains powertest Result: in the oscilloscope to the output negative moment, the leakage protection switch trip!!!After consulting, analysis, just understand oneself because did not understand "os
Original link: http://www.elecfans.com/analog/20120509270848_4.htmlAmplitude modulation and detection circuitsRadio and radio communication is the use of modulation technology to add low-frequency sound signal to the high-frequency signal emitted. The process of restoring in the receiver is called demodulation. wherein the low frequency signal is called the modulation signal, the high frequency signal is called the carrier. The common method of continuous modulation is amplitude modulation and F
A three-state gate refers to a gate circuit in the high-impedance state, in addition to the two states of high and low-level output.
The high-impedance mode is equivalent to the partition state. (High resistance,
Equivalent to open ).
Each three-state gate has an en-controlled enable end to control the circuit breaking. . A device in these three States is called a three-state device (gate, bus ,......).
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1. Input Impedance
An input impedance is the equivalent impedance of a circuit input. When a voltage source U is added to the input end and the current I at the input end is measured, the input impedance Rin = u/I. You can think of the input end as the two ends of a resistance. The resistance of this resistance is the input impedance.
The input impedance is no different from
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Reader's assumptions
Mastered:
Programmable Logic Basics
Base on OpenGL
Verilog us II Getting Started Guide designed with OpenGL
ModelSim Getting Started Guide designed with OpenGL
Content 1 Basic door circuit 1.1 Structured description
1. Use Quartus II to create a project logic_gates. The top-level module is named logi
A common set, a common basis, or a common shot refers to a circuit, which is the connection state of a transistor circuit rather than a transistor. The so-called "Total" refers to the total part of the input and output circuits. It is determined by the AC equivalent circuit.Common collector circuit-the collector grounding of the transistor. the Collector is the p
Topic Links:poj1780Test instructionsKEY company developed a new type of safe. To open the safe, you do not need a key, but you need to enter a correct, n-digit encoding. There are several types of safes, ranging from toys for children (2-digit numbers) to military-type safes (6-digit digital codes). When the last encoding is entered correctly, the safe opens immediately. There is no "OK" key on the safe. When you enter more than n digits, only the last n digits are valid. For example, for a 4-bi
(1) circuit switching: Before communication, a physical channel exclusive to both parties must be established between the two parties (composed of the switching devices and links of both parties ), therefore, it has the following advantages and disadvantages.
Advantages:
① Because the communication line is dedicated to users of both parties, the data transmission latency is very small.
② Once a physical path is established between the communication pa
The following is my summary of the basis of the mos and MOS driving circuit. I have referred to some materials, not all original. This includes the introduction, features, drivers, and application circuits of MOS tubes.
When using MOS to design a switching power supply or motor drive circuit, most people will consider the mos on-resistance, maximum voltage, maximum current, and so on. Many people only consi
Abstract: Voltage source and current source, Kirchhoff's Law (KCl and KVL), circuit analysis method---------------------------------------------1. Voltage source and current sourceAs shown,
Voltage source can be regarded as an ideal voltage source and its internal resistance in series combination (refers to the internal resistance value of 0);
The current source can be regarded as the ideal circuit
Hadoop version: 2.6.0This article is from the Official document translation, reproduced please respect the work of the translator, note the following links:Http://www.cnblogs.com/zhangningbo/p/4146296.htmlBackground
In HDFs, the data is usually read by Datanode. However, when a client reads a file to a Datanode request, Datanode reads the file from disk and sends the data to the client via a TCP socket. The so-called "short circuit" refers to th
In a microservices architecture, the service is split into services according to the business, and the service and service can call each other (RPC), which can be invoked with Resttemplate+ribbon and feign in spring cloud. To ensure their high availability, a single service is typically deployed in a cluster. Due to network reasons or their own reasons, the service does not guarantee that 100% is available, if a single service problem, call the service will be a thread blocking, if there is a la
whole, it is a unity of mutual complementarity and integration, and also has their own independence. Therefore, in engineering design and installation and construction, coordination must be carried out with the design and construction units of the house building and other facilities, and comprehensive consideration and proper handling methods should be taken to solve the problem in a timely manner, to ensure normal use.
In addition to communication networks, computer networks, and building auto
First, the circuit compositionThe regulator circuit composed of Zener diode dz and current limiting resistor R is the simplest DC regulated power supply. Two basic relations can be obtained from the regulator circuit of the regulator tube :
Ui=ur+uo
Ir=idz+il
Voltage Regulator Tube volt-ampere characteristics such as, in the voltage regulator
analog switch is on, the on-resistance is dozens of ohms, and when the analog switch is cut off, it exhibits a high impedance, which can be seen as an open circuit. Analog switches transmit both digital and analog signals, and the upper frequency of the analog signals that can be transmitted is 40MHz. The crosstalk between the switches is very small and is typically -50db.2. Single eight analog switch CD4051The CD4051 pin function is shown in Figure
From: http://www.360doc.com/content/10/0419/12/952018_23781379.shtml
Circuit Diagram symbols are represented by a painting or calligraphy image.The symbols of electronic components (such as capacitors, resistors, diodes, three-pole functions, and integrated circuits). With the circuit diagram symbols, I can learn, demonstrate, and design them easily on the drawing.Circuit Diagram symbolsCharacterDescriptio
Switch Feature of MOS
In CMOS integrated circuits, the metal-oxide-semiconductor field-Effect Transistor (MOs) is used as the switching device.
Structure and working principle of MOS
Input and Output features of MOS
For the common source pole access circuit, the flash and the substrate are isolated by the silica insulation layer, so the gate circuit is zero.
Common source pole access
first, the microcontroller can output DC signal, but its drive capacity is also limited, so the microcontroller generally do drive signal, drive large power tube such as MOS tube (LR7843), to generate large currents to drive the motor, and the duty ratio can be controlled by the drive chip to control the average voltage on the motor to achieve speed regulation.
The motor Drive mainly uses the N-channel MOSFET to construct the H-Bridge drive circuit,
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