Answer: The equipment configured by multimedia computers for processing multimedia information includes the following categories: (1) Input equipment for inputting multimedia information into computers, mainly including: optical drive, sound card, video capture card, microphone, electronic organ, scanner, tape recorder, VCD/DVD, digital camera, video camera, etc. (2) Various functional cards used to process multimedia information mainly include: TV card, modem card, video editing card, VCD compression card, network card, etc. (3) The output devices used to output multimedia information mainly include CD burners, sound cards, video conversion cards, speakers, stereo headphones, tape recorders, video recorders, printers, etc. (4) Software support: audio processing software, image processing software, video processing software, communication software, VCD production and CD burning software, etc.
The hardware system of multimedia computer should include those basic devices. Multimedia computer system refers to a complete computer system that can combine video, audio and computer interactive control, and fully digitize the acquisition, generation, storage, processing, recovery and transmission of audio and video signals. A multimedia computer system generally consists of four parts: a multimedia hardware platform (including computer hardware, audio-visual and other media input and output devices); Multimedia operating system (MPCOS); ; Graphical user interface (GUI); ; Application tool software supporting multimedia data development.
Necessary equipment for multimedia computers.
Binary logic 0. 1 How to define the input signal?
Multimedia computer, its main function is to combine audio and video, graphics and images with computer interactive control for comprehensive processing. Generally, multimedia computer consists of four parts: multimedia hardware platform (including computer hardware, audio-visual and other input and output devices of various media), multimedia operating system (MPCOS), graphical user interface (GUI) and application tools and software supporting multimedia data development.
What hardware and software hardware should a multimedia computer include: arithmetic unit, controller, memory, input device and output device.
Software: application software and system software.
Common multimedia computer upgrade packages generally do not contain _ _. c
What more input and output devices do multimedia computers have than ordinary computers? An ordinary computer consists of a host, a monitor, a keyboard, a mouse and a speaker. There are printers and scanners, which are important input and output devices of computers.
Host is the most important equipment of computer, which is equivalent to human brain. Almost all files and information are controlled by it, and it is mainly responsible for the work you need the computer to complete. It also distributes work to other computer devices, so other devices are also called peripherals. How the host works, we will introduce it in detail later.
The monitor is the main output device of the computer, and its important task is to show the thinking results of the host computer to everyone. It is connected to the host's graphics card through a video cable. In the past, people mostly used 14 inch (diagonal length of screen, 1 inch =2.56cm) spherical display. Due to the rapid development of computers and related equipment, the current 15 inch monitor has gradually withdrawn from the mainstream position. At present, 17 inch color display screen has become very popular, and the trend of becoming the mainstream configuration is becoming more and more obvious. The screen of flat-panel right-angle display is almost on the same plane, which is no longer convex in the middle like the previous display, and the picture effect has been greatly improved. At the same time, a large number of flat panel displays have been put on the market. These new monitors not only meet the practical requirements, but also meet the environmental protection requirements, so that computer users' vision can be best protected and enjoyed.
The function of the keyboard is opposite to that of the display, and it is responsible for "inputting" to the host system and the user's work requirements for the computer. The user's instructions must pass through it to tell the "brain" of the host. Only through it can the computer know what to do. Moreover, at present, the keyboard is still an irreplaceable input device for computers.
Mouse, with the popularity of Windows graphical interface, many commands and requirements basically no longer need keyboard input. You can tell the computer what to do by operating the left mouse button or the right mouse button. Therefore, although the mouse is small, it brings great convenience and a lot of fun to computer users.
Speaker, in order to meet the needs of computer multimedia, now, the multimedia computer family with audio and pictures is becoming more and more powerful, adding a lot of colors to our work and life, and it has also become the reason to attract many computer enthusiasts. The sound of the host computer is transmitted to the speaker through the sound card, and then displayed by the speaker, which truly reflects the multimedia effect.
Printers are closely related to computers. Printers, like monitors, are also common output devices, which are connected to the parallel port behind the host computer through the parallel port line. There are three types of printers: needle printers, inkjet printers and laser printers, and their performance is gradually improving.
In order to better understand how computers work, we need to spend some time paying attention to the host. We disassemble the mainframe, and its main components are motherboard, memory stick, hard disk drive, floppy disk drive, CD-ROM drive, sound card, graphics card and modem.
Motherboard is the skeleton of a host, and most devices are connected together through it; CPU, whose English name is Central Processing Unit, means Central Processing Unit. It is the heart of the host computer, which commands and dispatches all the work of the computer in a unified way. Generally speaking, 486, 586, Pentium, PII and Celeron refer to different CPUs.
Memory, English name Read Arandom Memory, referred to as RAM, is the place where computers store data and information during work. Its unit is called "megabyte" and is represented by "m" (1M = 1024K, 1K = 1024 bytes, 1 Chinese characters. Today's machines are generally equipped with 32M or 64M memory.
Hard disk is the place where all kinds of software are usually installed and files are stored, which is equivalent to the belly of the host, the user's Windows98, all kinds of game software or files and letters are put inside. In the past, the hard disk capacity was small, only a few hundred megabytes. At present, there is a large capacity of 6G, 8G or10g (1g =1024m), and 20G and above have appeared at present.
Floppy drives are divided into 3.5 inches and 5 inches. At present, the commonly used 3.5-inch floppy drive can read and write 3.5-inch floppy disks. The capacity of a 3.5-inch floppy disk is 65,438+0.44 MB bytes. You can copy some small programs and files with floppy disks, or copy a file to exchange files with another computer. You can also back up a copy of the master file information on the floppy disk in case the data is lost when the computer breaks down.
Optical drive, also called CD-ROM drive, means read-only CD-ROM drive (read-only, not write-only). A CD can generally store about 650M of data and can be used to store some large-scale software. Without it, how many large-scale software, such as WIN98 and Office 2000, need to be loaded with 3.5-inch floppy drives?
One of the main performance indexes of optical drive is "double speed", which is calculated by reading 150K bytes from optical drive every second. Double speed means that 2x 150K=300K bytes (1K= 1024 bytes) can be read from the optical drive every second. At present, the commonly used optical drive has reached the speed of 32 times or 48 times, and the 100 times optical drive will be listed soon.
Graphics card is a common computer expansion card, which is responsible for telling the display the results of operation and processing and the status of the host.
The sound card is responsible for "speaking" the sound processed by the host computer to the speaker (or sound box).
This paper briefly introduces the composition of the host computer and the division of labor of each component, and also introduces the computer and some peripheral printers. Now let's sum up the previous contents. The main component or equipment in a computer is the host. The device used to display the working state of the computer is the monitor, and the main device to send commands to the host is the keyboard. The auxiliary equipment of the computer includes: mouse, handwriting board, etc. The equipment that enables us to hear the sound from the computer is the sound box; We only need to connect them through various cables, and we can get what we usually call a complete computer.
Multimedia technology What devices does a personal computer generally include, and what are its main features? Multimedia technology Personal computers include hardware devices and software devices.
Multimedia technology The hardware equipment of personal computer includes:
Host: The host is the main body of the whole computer. It can be said that when a computer is used for work, the work is done inside it. The main engine is divided into vertical and horizontal in appearance. The structure of vertical chassis is more conducive to heat dissipation and more popular with people.
Keyboard: It is an indispensable input device in a computer. Users can input commands and data through the keyboard and control the operation of the computer through the keyboard. Most of the common keyboards are 10 1 or 104. Some relatively novel 104 keyboards often have two Windows keys and one application key to improve the efficiency of operating a computer on the Win7 operating system. These keys can be divided into big keyboard area, editing keyboard area, function key area and small keyboard area.
Monitor: It is the basic output device of computer and an indispensable part of the whole computer hardware system. Liquid crystal displays are widely used now. Compared with the traditional cathode ray tube display, it has lower radiation, smaller volume and lower power consumption. It uses the characteristics of liquid crystal to make the arrangement orderly when it is powered on, so that light can easily pass through, and when it is not powered on, the arrangement is chaotic, preventing light from passing through, and displaying images through circuit control.
Printer is also a common output device. Because the content displayed on the monitor can't be seen once it is turned off, and it is not convenient to move the monitor around for others to see, we still need to print out our work results with a printer.
Mouse: an important input device in the computer, which can easily locate the mouse pointer at the position of our designated screen and conveniently complete various operations. According to its working principle, the mouse is divided into mechanical mouse, photoelectric mouse and optical mouse. At present, the commonly used mouse is photoelectric mouse. Below the optical mouse are two small light sources placed in parallel. The mouse can only move on a specific mouse pad. The light emitted by the light source is reflected by the mouse pad, received by the mouse as a moving signal and sent to the computer, so that the mouse pointer on the screen moves accordingly. The mouse pointer moves in the same direction as the mouse, and the moving distance is proportional. The photoelectric mouse is flexible to use and has low failure rate.
Speaker: It is equivalent to the mouth and throat of a computer. With it, the computer can make pleasant sounds. There are two kinds of speakers: wooden and plastic. Two speakers are placed on both sides of the computer, one on the left and the other on the right, with a certain distance from the display, so as to get the stereo effect.
Microphone: equivalent to the ear of a computer. With it, the computer can transmit external sounds to the computer, convert them into digital waveforms, and input them into files or multimedia images.
Cameras can be divided into two categories: digital cameras and analog cameras. Digital camera can shoot images directly and transmit them to computer through serial port, parallel port or USB interface. According to the shape of the camera, it can be divided into desktop base type, high pole type and LCD suspension type. Cameras can also be divided into driven and non-driven cameras.
Software is divided into system software and application software.
The system software is responsible for managing all kinds of independent hardware in the computer system and making them work in harmony. System software enables computer users and other software to regard the computer as a whole, regardless of how each underlying hardware works.
Operating system is a program that manages computer software and hardware resources, and it is also the kernel and cornerstone of computer system. Operating system is responsible for managing and configuring memory, determining the priority of supply and demand of system resources, controlling input and output devices, operating network, managing file system and other basic affairs. The operating system also provides an operating interface for users to interact with the system. At present, the main operating system of multimedia personal computers is Windows 7.
Application software is software developed for a specific purpose. It can be a specific program, such as an image browser. It can also be a group of programs with closely related functions that can cooperate with each other, such as Microsoft Office software. It can also be a huge software system composed of many independent programs, such as a database management system. The application software of multimedia personal computer mainly includes cool dog music, Tencent video, PPTV, Office 2007 and so on.