What is a graphics card, a sound card, what is a pixel

Graphics cards are also known as display adaptation cards, and the current graphics cards are all 3D graphics acceleration cards. It is an interface card that connects the host computer to the display. Its function is to transfer the output information of the host.

It is converted into characters, graphics, colors, and other information, and transmitted to the display on the display.

A sound card, also known as an audio card, is a necessary part of the MPC, and it is an adapter for the computer to process sound. It has three basic functions: one is the synthesis pronunciation function; the second is the Mixer function and the Digital Sound Effects Processor (DSP) function; The third is the input and output functions of analog sound signals.

The sound information processed by the sound card is stored in the form of a file in the computer. The sound card should be supported by the appropriate software, including drivers, mixers, and cd** programs.

Most graphics software tutorials will give you a brief introduction to basic concepts such as bitmaps, vectors, resolutions, color modes, and more. There are also many articles available online.

Pixel: Refers to the smallest unit of composition in a bitmap image, and pixels can no longer be divided into smaller units. In general, it is a square with information such as color, light and shade, coordinates relative to the whole image, and a certain number of different colors are arranged and combined in small squares to represent a bitmap image, that is, a bitmap image.

An image taken with a digital camera, scanned by a scanner, or output by bitmap software is a bitmap.

Resolution: Pixels can no longer be divided into smaller dots, but pixels can actually be large and small. The number of small squares per unit area is the resolution of an image.

The more pixels per unit area, the smaller the individual pixels, and the higher the image quality. Conversely, the fewer pixels per unit area the content, the larger the individual pixels, and the lower the image quality. For the convenience of representation, image resolution is not represented by area, but by the number of pixels contained in the unit length on one side of the rectangle, the length unit is generally inches, and the resolution of the printed image we often say is 300, that is, the image contains 300 pixels in one inch (in centimeters), and there are 90,000 pixels in one square inch. Such an image for a screen display with a resolution of 72 would be approximately 16 times the print size at 100% display ratio.

Sound card (sound card) is also called audio card (Hong Kong and Taiwan call it sound effect card): sound card is the most basic component of multi-technology and is a kind of hardware that realizes the mutual conversion of sound wave digital signals.

The basic function of the sound card is to convert the original sound signal from the microphone, tape, CD and vertical mold, and output it to earphones, speakers, amplifiers, tape recorders and other acoustic devices, or make the instrument sound beautiful through the ** device digital interface (MIDI).

Graphics card is one of the most basic components of personal computers, which is used to convert the display information required by the computer system to drive the display, and provide progressive or interlaced scanning signals to the display, control the correct display of the display, and is an important component to connect the display and the motherboard of the personal computer, and is one of the important devices of "man-computer dialogue".

Sound card (sound card) is also called audio card (Hong Kong and Taiwan call it sound effect card): sound card is the most basic component of multi-technology and is a kind of hardware that realizes the mutual conversion of sound wave digital signals.

The basic function of the sound card is to convert the original sound signal from the microphone, tape, CD, and output it to earphones, speakers, amplifiers, tape recorders and other sound devices, or to make the instrument sound beautiful through the ** device digital interface (MIDI).

Graphics card is one of the most basic components of personal computers, which is used to convert the display information required by the computer system to drive the display, and provide progressive or interlaced scanning signals to the display, control the correct display of the display, and is an important component to connect the display and the motherboard of the personal computer, and is one of the important devices of "man-computer dialogue".

The full name of graphics card is display interface card, also known as display card, which is one of the most basic configuration and important accessories of a computer. As an important part of the computer host, the graphics card is a device for the computer to convert digital-to-analog signals, and undertakes the task of outputting and displaying graphics. The graphics card is connected to the motherboard of the computer, which converts the digital signal of the computer into an analog signal for the display of the display, and the graphics card still has image processing capabilities, which can assist the CPU to work and improve the overall running speed.

For people who are engaged in professional graphic design, graphics cards are very important. The leading manufacturers of graphics chips for civil and military graphics cards include AMD (Supermicro Semiconductor) and NVIDIA (Nvidia). Today's TOP500 computers all contain graphics card computing cores.

In scientific computing, graphics cards are called display accelerator cards;

Memory is one of the most important components of a computer, and it is the bridge that communicates with the CPU. The running of all programs in the computer takes place in memory, so the performance of the memory has a very large impact on the computer. Memory, also known as internal memory, is used to temporarily store computing data in the CPU and exchange data with external memory such as hard disks.

As long as the computer is running, the CPU will transfer the data that needs to be calculated to the memory for calculation, and when the operation is completed, the CPU will send the result out, and the operation of the memory also determines the stable operation of the computer. Memory is composed of memory chips, circuit boards, gold fingers and other parts;

Sound card (sound card) is also called audio card (Hong Kong and Taiwan call it sound effect card): sound card is the most basic component of multi-technology and is a kind of hardware that realizes the mutual conversion of sound wave digital signals. The basic function of the sound card is to convert the original sound signal from the microphone, tape, CD, and output it to earphones, speakers, amplifiers, tape recorders and other sound devices, or to make the instrument sound beautiful through the ** device digital interface (MIDI).

The computer outputs sound from the sound card, and the output of the image is from the graphics card.

Graphics card performance indicators: core model core frequency core crystal number architecture number of stream processors stream processor frequency video memory model video memory capacity video memory frequency bandwidth pcb workmanship power supply phase graphics card materials ...

1 GPU Specifications 2 GPU Quantity 3 Video Memory Capacity 4 Video Memory Bandwidth 5 Physical Acceleration Capability 6 Graphics Card Power Consumption

This is from my computer assembly and maintenance book!

Graphics card: used for computer display.

Network card: used for contact, surfing the Internet, etc.

The sound card refers to the sound channel, the network card gigabit refers to the speed bridge stupidity of the transmission, and the graphics card 5300 and 5700 refer to the model. Generally, burn-out graphics cards are named after the chips shown by the graphics brother.

Sound cards and graphics cards are a type of output device.

1. The sound card is to process the sound information of the computer and transmit it to the speaker or speaker through the data cable, which is the sound output.

2. The graphics card, also known as the graphics display card, is to process the instructions sent by the CPU and transmit them to the display through the data cable for display, which is the image output.

3. Keyboards, mice, and this kind of input device used to write information to the computer is called an input device.

4. Graphics cards, sound cards, monitors, printers, which are used to display the results of computer processing are called output devices.

Whether a piece of hardware is an input or an output can be judged by whether it writes information to the computer or outputs the processing results.