What is a buffer What does a buffer mean Buffer means

Buffers, also known as caches, are a portion of memory space. That is, a certain amount of storage space is reserved in the memory space to buffer the input or output data. This reserved space is called the buffer.

A buffer is a container with a fixed amount of data, and it functions as a memory or a segmented transfer area where data can be stored and later used for retrieval.

The four properties of buffering.

1.Capacity (capacity).

Refers to the maximum number of data elements that a buffer can hold. This capacity is set when the buffer is created and cannot be changed.

2. Upper limit (limit).

The subscript index of the array of the first element that cannot be read or written in the reference buffer. It can also be thought of as the actual number of elements in the buffer.

3.Location. Refers to the index of the next element to be read or written. The value will be automatically updated with a call to get() or put().

4.Mark (Mark).

Refers to the memo location. Mark () is called to set mark = position, and reset() is called to set position = mark. Tags are undefined until they are set.

Refers to a data store shared by multiple hardware or program processes running at different speeds or priorities, in which data is temporarily saved. Buffers make it less time for processes to wait for each other. The process that ends first can put the result into the buffer and carry out the following work, and the process that finishes later can take the original data from the buffer and continue to work.

The function of the buffer is: to play a speed smoothing effect between high-speed and low-speed equipment; temporary storage of data; Frequently accessed data can be put into a buffer, reducing access to slow devices to improve the efficiency of the system.

<>1. A buffer zone is a kind of influence or service scope of a geospatial target, which specifically refers to a certain width of multi-sided that is automatically established around a point, line, or surface entity.

2. There are many buffer shapes, such as triangles, rectangles and diamonds for point objects, double-sided symmetry, double-sided asymmetry or unilateral buffers for line objects, and inner and outer buffers for surface objects. Suitable for different applications.

3. That is, the buffer zone with the radius of the object Oi is r, which is the set of all the bad points with the distance d from Oi less than r. d is generally the minimum Euclidean distance, but it can also be a distance defined by other definitions.

4. The buffer zone, also known as the neutral zone, the neutral zone, etc., refers to the strip area demarcated at the junction of the two places due to war or other factors, and is a military buffer zone set up between countries, and this strip area does not completely belong to one of the two parties, and is usually managed by the two parties or assisted by a third party. It allows access to only a small limited number of military forces that can only carry out tasks such as border patrols, and the troops deployed in this area cannot pose a threat to other countries. With the increasing range of intercontinental missiles and the rise of air power and space power, the importance of today's buffer zone is far less than that of land power and access to the sea.