hdlc frame

The format of the Ethernet frame is as follows: 802.3 Ethernet frame structure forward code frame start character MAC destination address MAC source address 802.1Q label (optional) ethernet type or length load redundancy verification frame spacing 10101010 7 octet 10101011 1 octet 6 octets 6 octets (4 octets) 2 octets

Bounds coordinates: Your own defined coordinate system, Setbound indicates the coordinates of the upper-left corner of this view in the coordinate system,Default value (0,0)Frame coordinates: The coordinates of the upper-left corner of the child view in the parent view coordinate system (bounds coordinate system), default value (0,0)Child view Actual position = Parent View actual location-parent view bounds coordinates + child view

This tutorial introduces the most basic three kinds of animation methods in Flash: Frame animation, deformable animation and motion animation. 　　1. The concept 　　One- frame animation --the most basic form of flash animation--is the animation created by changing the contents of each consecutive frame on the edit stage. 　　shape Tween Animation --a animation that

Summary: The framework layout is one of the simplest and most effective layouts for Android Developer organization View controls. With this article, you'll learn all about frame layouts, which are used primarily to organize special or overlapping view controls on the screen. If used properly, many interesting Android app user interfaces can be designed based on the frame layout.

After the Linux Kernel Program Boot/head. s executes the basic initialization operation, it will jump to execute the init/Main. C program. How does the head. s program forward execution control to the init/Main. C program? That is, how does an assembler call and execute a C language program? Here we will first describe the calling Mechanism and Control Transfer Method of the C function, and then describe the method for the head. s program to jump to the C program. Function call operations includ

Transferred from: http://blog.csdn.net/lyr1985/article/details/6067026 csdn1, frame can not be separated from frameset alone, IFRAME May;2, frame can not be placed in the body, as shown below:The following does not display properly:3, nested in the frameset of the IFRAME must be placed in the body, the following can be displayed as normal:The following does not display properly:4, not nested in the frameset

Framework Programming Overview An HTML page can have one or more child frames, which are marked with cross-references between frames All frames in a page are provided as properties of the Window object in the form of a collection, for example: Window.frames represents a collection of all the frames within the page, similar to the form objects, linked objects, picture objects, and so on, and these collections are the properties of the document. Therefore, to refer to a child

Reference: http://blog.csdn.net/hherima/article/details/39501857In the UI development of iOS, it is often necessary to locate the view. The more common concept is frame and bound, through the view of the two properties, you can arbitrarily "fiddling" with our view.Both of these properties can define the location and size of the view, but what is the difference between the two properties and how do they relate? After data search, record as follows:The

This article mainly explains in detail the complex javascript window sharding, what is the relationship between window sharding and frame windows in JavaScript. For more information, see What is window frame separation? Window Frame separation separates a browser document window into multiple windows. Each window can display an independent webpage file, and each

First, stackStacks exist as a special data structure ("back-in-first-out" storage), which is a special linear table that can only be inserted and deleted at one end.Most of the program implementations on the CPU use stacks to support function invocation operations. Stacks are used to pass function parameters, store return information, temporarily save the original value of the Register for replies, and store local data.Stack has a lot of its own features, it has a memory function, the stack of I

Differences and usage of frame, IFRAME, and noframe ■ Framework concept:The so-called framework is to divide a webpage into several frames and obtain multiple URLs at the same time. You only need to In this example, ■ : Example: Cols = "90 ,*"Vertical Cut screen (such as divided between the left and right pictures), accept the integer, percentage, * represents the occupied space. The number of values indicates the number of windows to b

The original post address is http://blog.csdn.net/skywind/article/details/6179506. The original author skywind expressed his gratitude to the original author for a very good article. --------------------------------- The online game synchronization algorithm is widely used in RTS games, xbox360 arcade games, and simulator battle platforms. Http://blog.csdn.net/skywind Algorithm Concept This algorithm generally requires that the network speed RTT should be within Ms. Generally, the number of peop