2012-03-27

LED light source characteristics

Editor this paragraph of LED light source characteristics
The new green light: the use of LED cold light, glare, no radiation, use does not produce harmful substances. LED low working voltage, DC drive, ultra low power ( single0.03 ~ 0.06W ), LED Lighting module electric power conversion is close to 100%, in the same lighting effect than the traditional energy-saving light source above 80%. LED environmental protection benefit are better, no ultraviolet and infrared spectrum, and recyclable waste, no pollution, no mercury element, safe touch, typical of green lighting source.
The long life: LED as solid cold light source, epoxy resin package, shock resistance, light body and no loose parts, there is no filament lights burning, heat deposition, attenuation etc, the service life of up to60000~ 100000 hours, is the traditional source lifetime of more than 10 times. LED stable performance, can be in -30 ~ +50oC environment to normal operation.

The multiple transformation: LED light source can use red, green, blue three primary colors principle, in computer technology under the control of the three colors with256 gray levels and arbitrary mixed, can generate256X256X256( i.e. 16777216) colors, forming different color combinations. LED combination of light be the most changeful, can realize the rich and colorful dynamic effect and various image.

The new and high technology and traditional light emitting effect: comparison, LED light source is low microelectronic products, successful integration of computer technology, network communication technology,Bluetooth keyboard device image processing technology and embedded control technology. The traditional LED lamp used in the chip size is 0.25mmX0.25nm, and lighting LED size is generally to be above 1.0mmX1.0mm. The LED bare chip forming the working table structure, inverted Pyramid structure and the flip chip design can improve the luminous efficiency, thereby making more light.

The LED package design innovations including high conductivity metal block base, flip chip design and bare disc casting type lead frame, using these methods are able to design a high power, low thermal resistance of the device, and the device than the traditional LED products illuminance illuminance greater.

2012-03-13

bones of partition room

A stirring among the dry bones of partition room
With a lot company formationof field have the Spring Festival home people have returned to Beijing to rent a house, have been banned from the" hit him a stirring among the dry bones" phenomenon, many housing intermediary agent Housing will play a number of partition of rental.

Event
The owner forced to sign off proof""
Recently, the family lives in Jiuxianqiao area under the name of Mr. own a 109 square metre house by the regional intermediary companies rental agent. In the rental process, the intermediary to Mr.operable partition Wang showed a piece of A4 paper size" partition ." ask him to sign, and said, only sign the certificate, intermediary institutions to agent. After many setbacks, Mr. Wang eventually see intermediary in the monthly can give 4500 yuan in rent and security, housing security, agreed in the rental played a partition. According to Mr memories," partition ."":
" Sir / Madam agree in their playing a partition.
Signature:".
February 4th, the reporter accompanies Mr. Wang came to the house, originally in the door lighting hall has been divided into a narrow and dark corridors. A be gypsum board with wood to build the " wall" to nearly 30 square meters living room into a bedroom, bedroom has to 1500 yuan / month price for a door tenant.
Although the partition has been hit,operable wall but Wang still some doubts:" Beijing is not expressly permitted in the rental housing hit him? Why now intermediary not only to hit him, but also out of such a partition that. This certificate is legitimate? If people complain, culminating in a policy referred to in 10000 yuan of above 30000 yuan fine who will pay?"

2012-03-06

computer display

If CPU is the heart of computer, computer display is the face, then the keyboard is a computer 's mouth, is that it realizes the human and computer communication. However as we come in contact with the most peripheral products, the majority of cases the keyboard function is neglected, Android TV Remote aprereciciar apreopiear it and its slow development have all kinds of connections with contact with.
" Big mouth" Snoopy

PC XT / AT era keyboard mainly with 83 keys, and last for a fairly long period of time, but as the windows of popularity in recent years have been eliminated. Replace sb. 's 101 keys and 104 keys in the keyboard, and occupy the mainstream position of market, but it has also appeared in 102 keys, 103 key keyboard, but due to poor promotion, only flower briefly as the broad-leaved epiphyllum. Nearly half of the year, then 104 key keyboard appears to be emerging multimedia keyboard, it is in the traditional keyboard and on the basis of the increase in the number of commonly used shortcut key or volume regulating device, to make the PC operating further simplified, for e-mail, open the browser software, multimedia players only need to press a specific button, at the same time in shape also made significant improvements, emphasizing personalized keyboard. At first this type of keyboard used for brand machine, such as HP, Lenovo and other brand machine took the lead in using this type of keyboard, received wide acclaim, and was once regarded as a brand machine features. With the passage of time, gradually also appeared on the market with various independent shortcut function products sold separately, and a special driving and setting software, the compatible machine can also realize personalized operation.
" Mouth" of the
Shell, the current desktop PC keyboard adopts movable keyboard, keyboard as input in a discrete component, has its own enclosure.Bluetooth KeyboardA keyboard panel according to the grades of different plastic pressed, some high-quality keyboard at the bottom by a thick steel plates to increase the keyboard texture and rigidity, but it will undoubtedly increase the cost, so a lot of cheap keyboard directly adopts the plastic base design.
In order to meet the needs of different users, the bottom of the keyboard is provided with a folding support legs, unfolding the support foot can make the keyboard tilted, different keyboard will provide single, double or three segment angle adjustment.
Conventional keyboard with CapsLock ( small letters lock), NumLock ( digital small keyboard lock ), ScrollLock 3 indicating lamps, marking the current keyboard state. These lamps are generally located in the upper right corner of the keyboard, but there are some keyboard such as Acer Ergonomic KB and HP original keyboard using the built-in lamp, this design can be more easily determine the current state of the keyboard, but the process is relatively complex, so most of the ordinary keyboard have not adopted this design.
No matter how changes in the basic form of the keyboard, the keys are arranged is maintained substantially constant,BLN Design can be divided into main keyboard area, a numeric keypad area, F key function keyboard, control keypad, for multifunctional keyboard also adds shortcuts area.