Computer

Scenario 1:A single-process program can be bound with a port. When the program starts, you can try to see if the port is already in use, and if so, the program has started.Scenario 2:You can create a hidden file in a Java program and delete the file

Recently compared empty, busy preface, will own the notebook to carry on the reload, before each reload has not recorded, this time will be recorded for the reload process, so that the next reference1 First, needless to say, the WIN7 flagship

I. The emergence and development of computer network1. Terminal-oriented computer network One representative of the first generation of computer networks was Sabrei, a the early 1960s American airline company that investedAir ticket booking

Article Three: links to ProgramsThe origin of the > linkerAfter the advent of high-level languages, multiple people need to develop different modules.Link steps:1) determining symbolic reference relationshipsDetermining the definition of a symbol2)

PS: This is the first time in my career it has seen such a clumsy and slightly ridiculous management way.Under normal circumstances, the client to a certain amount of scale, will be enabled domain control to manage. Some of the companies I've been

The calculator is composed of five components of the computer, the controller, the memory, the input device and the output device,Each part performs a specific basic function as required.⑴ operator or arithmetic logic unit (arithmetical and Logical

>UDP is a non-connection-oriented unreliable network transport protocolMost of the UDP protocol is similar to the TCP protocol, except that his client program does not need to connect, but sends the data directly.>sendto () and recvfrom ()

The first chapter--Overview Computer network Performance Index1. Rate, transmission data rate, also known as data rate, bit rate, units are: b/S, kb/s, MB/s, tb/s2. Bandwidth, the highest transfer rate, which is the highest rate, with the same

When the CRT is used to randomly scan a display (Random-scan display), its electron beam only shows part of the graphic on the screen. The electron beam tracks the composition lines of the graph, creating a line chart. Thus, a random-scan display is

the properties of the pointIn general, we can set the two properties of a point: color and size. In a description system, the display color and size of a point is determined by the current value stored in the attribute table. The color component is

First, the computer screen:Right-click on the desktop and select Properties-AppearanceClick Advanced in the lower right corner and select the window in the project's drop-down menuPoint to the right of the drop-down menu color, point below the

* * The channel used by the data link layer mainly has the following two classes:(1) Point-to-point channel: Use a one-to-one point-to-point communication method.(2) Broadcast channel: Use a one-to-many broadcast communication mode. There are many

Cpu1.CPU: CPU for a specific function of the chip, which contains micro instruction set, if you want the host to do what specific functions, you have to refer to the CPU has the relevant built-in micro-instruction set toThe 2.CPU can be divided into

First, the concept of bandwidth"Bandwidth" is bandwidth literal translation of English words. In different areas, the understanding of bandwidth is also different.1, the field of electronic communication: refers to a certain signal has a fixed band

Mooc:build a modern computer from first Principles:from Nand to TetrisDesigning modern computers with the first principle: from non-doors to Tetrishttps://www.coursera.org/learn/build-a-computer/ Design a computer from scratch, and that's what

1, first you want to make sure that you have an external network IP address. If you assign a local area network IP address, you need to go through a series of conversions to an extranet IP address, and then proceed to the following operation.2, get

The network uses the transmission medium to connect the isolated host together, so that it can communicate with each other and complete the data transmission function.2.1 Cable Transfer Media2.1.1 Cable SignalThere are 3 kinds of electrical signals

Shortcut keysPress Windows individually: Show or hide the Start menuwindows+break: Display the System Properties dialog box windows+d: Show Desktop Windows+m: Minimize All windowsWindows+shift+m: Restore minimized windowswindows+e: Turn on "explorer"

plot summary:[Machine Xiao Wei] in [engineer Ah Wei] escorted into the [nine turn elixir] of the turn of the practice. Imagine a scenario:If you were allowed to take an Internet-connected computer to the college entrance exam, would you give up

Why divide the network layer?No network has different protocols and standards, in order to be able to exchange visits between different networks, sharing the resources of both sides, and also to maintain the original independence of each computer