1, Ethernet Ethernet was first created by Xerox (Xerox), in 1980 by DEC, Intel and Xerox jointly developed a standard. Ethernet is the most widely used LAN, including standard Ethernet (10Mbps), fast Ethernet (100Mbps), Gigabit Ethernet (1000 Mbps) and 10G Ethernet, all of which comply with the IEEE803 series of standard specifications.
2, according to the transmission media used by the network classification: wired network, wireless network. Classification according to network topology: bus, star, ring, tree, mixed, etc. Classified by the access control method used by the transmission medium: Ethernet, token ringNetwork, FDDI network and wireless local area network. Of all types, Ethernet is the most widely used LAN technology today.
3, Wireless Local Area network (WLAN) : WLAN refers to the use of wireless communication technology to connect computer equipment, forming a local area network that can communicate with each other and share resources. WLAN features include flexible construction, convenient access, multiple terminal access, and strong terminal mobility. At present, its data transfer rate can reach 54Mbps.
1, in the operation of the mixer, it is important to understand the function of each button. Usually, from top to bottom, it includes GAIN (gain regulation), HIGA (high frequency), MID (medium frequency), LOW (low frequency), MON (monitor control), EFF (effect), PAN (sound field). The initial signal of the GAIN control channel is generally large, and should be carefully adjusted to avoid overload.
2, Gain knob: adjust the input signal to put a lot. Peak indicator: When it is bright, it indicates that the input signal is too large and distorted after entering the tuning console. PAD key: constant attenuationPress this key to attenuate the input signal by 20dB. HIGH: treble level control. MID: knob for lifting or attenuating the middle frequency band; MID-HIGH Medium and treble level control. LOW: Bass level control. EFX.MASTER: Effect output level control.
3, fader (fader before/after) : The fader before usually means that the audio signal of the channel can be played, but the volume depends on the overall volume control of the mixer. The fader then indicates that the audio signal of the channel is ready and can be recorded or sent to other devices. Channel selection (CH1-CHX) : These keys are used to select the audio channel to be processed. Each channel has its own input source and volume control.
4, from the top to the bottom to explain it to you! The first white is the gain knob, which adjusts the size of the incoming signal. The second yellow is the compression knob that compresses the high level and compensates the low level used. The third green treble knob is used to gain (increase) or attenuate the treble band. The fourth green sweep knob, used in conjunction with the fifth option, selects the frequency band to be adjusted and uses the fifth knob to do gain overattenuation.
5, so, thisThe input volume should be adjusted, otherwise, the audio output of the mixer will be automatically cut off. Available controls include: Line-20 DB, reduce Gain, pull down the attenuator, generally to reduce Gain is appropriate. GAIN: The gain knob is used to adjust the input signal level. The level at which the input signal is output is determined jointly by the knob and the fader of the input unit.
6, monitoring key PFL (Pre-FadeListen's reduction) : the monitoring before attenuation, press it, and you can hear it with headphones plugged into the headphone jack of the mixerThe sound signal in front of the fader. The monitoring bus is a bus specially used for monitoring! It has a listening selection system, which can directly select all the input and output channels of the monitoring input channel, the main stereo bus, the marshing bus and the auxiliary bus. And he doesn't interfere with any channels.
1, PHILIPS electric iron, started in the Netherlands in 1891, the world's top 500 brands, one of the world's most valuable brands, a large multinational company. Electrolux Electrolux, founded in Sweden in 1919, is one of the world's top 500 manufacturers of home equipment and professional equipment. SANYO Electric iron, in 1947, the top ten brands of electric iron, one of Japan's largest enterprise groups, the world's top 500 enterprises. 2, the leading brand SUPOR, as the leader of the cookware industry, its YD06AC-20 electric iron with ceramic bottom plate and double descaling technology, provides 85g/min strong steam, 5 temperature control to ensure clothing safety. The drip-proof design allows you to iron wet clothes vertically.
3, Zhuo Li steam iron. Zhuoli Electrical Group is a private enterprise specializing in the production of small home appliances, integrating the design, development, production, self-export and service of home appliances. Every year, nearly 100 new products are launched to ensure synchronization with the international trend of small household appliances. Hua Yu steam iron. In modern life, the electric iron is one of the necessary appliances in the home, it helps people to keep clothes clean and professional image. Especially in the workplace environment, a good iron is crucial for office workers who need to iron shirts and suits regularly. Next, we take a look at the top 10 highly regarded electric irons on the marketBrand.
5, Red heart: old electric iron brand, with decades of production experience. As a well-known domestic brand, product quality once declined, but it has improved in recent years. Belleder: Domestic hanging press industry rising star brand. Famous for excellent marketing team and strict quality control, new products continue to lead the industry. 6, in fact, with an electric iron, all the folds can quickly become flat, but the electric iron also has good and bad, below we will simply introduce the top ten brands of the electric iron. Is the steam iron easy to use the advantages of the electric iron the use of the electric iron is very wideWhat are the combination of reflex cameras worth buying
1, Nikon SLR camera in the entry-level SLR camera is also more, such as Nikon D3200, Nikon D3500, Nikon D5200, Nikon D5300 and Nikon D5600, among which the better is Nikon 5300 and Nikon 5600 Nikon 5300; Nikon's D5300 is a half-frame model. When shooting scenery, a wide Angle lens is usually used. The best way to get a larger Angle of view on a half-frame fuselage is to have a wide-angle lens with a half-frame.
2 Nikon D5600, effective pixels: 24.16 million pixels, LCD screen size: 2 inches. The D5600 can be adapted to a variety of shooting scenes and different lighting environments. Nikon's Scene Recognition system uses the camera's 2016 pixel RGB sensor and image sensor to accurately analyze the subject's environment, including brightness and color. Nikon D3400, effective pixels: 24.16 million pixels, LCD screen size: 3 inches.
3, Nikon SLR camera What is worth buying combination Nikon SLR camera entry-level SLR camera is also more, such as Nikon D3200, Nikon D3500, Nikon D5200, Nikon D5300 and Nikon D5600, among which the better is Nikon 5300 and Nikon 5600 Nikon 5300; Nikon's D5300 is a half-frame model. When shooting scenery, a wide Angle lens is usually used. 4, although mirrorless cameras are Nikon's focus today, it's actually still possible to buy new DSLRS like the DD850, D750, and D500. Of course, if you buy a used camera, you can also buy more cameras. So you have a variety of options for your first Nikon camera.