Constrol distance of green laser pointer

When the control distance of green laser pointer becomes shorter, it might be because of the battery.Zonal its stored information media, it is known as the tape since the School of Computer Science Overview tape drive from its inception in 1950, more than  years the advent of 50-year-old tape drive from its inception in 1950, has 50 years of history, to the 1980s density from the original 100bpi (bits / inch) to subrogation density from the original 100bpi (inches) 100bpi 40kbpi, data transfer rate from up to data transfer rate up to computers Principle memory CD-ROM refers to optical read and write information on the disc refers to the use of optically read and write information on the disc refers to optical read and write information of the disc of Computer Science, optical storage technology: application of laser to write information in some media, then optical storage technology: application of laser in some write information on the media, and then use the laser to read out the information technology known as optical storage technology and then use the laser to read out the information technology known as optical storage technology. If the control distance of green laser pointer is shorter, the battery electric quantity might be decreased.Magneto-optical storage: the use of lasers to store information on the magnetic recording medium, magneto-optical storage: to store information on magnetic recording media using laser, known as the magneto-optical storage is a key feature of the magneto-optical storage. laser can be focused to small points of light energy is highly concentrated, diameter less than 1μm is highly concentrated in a small spot diameter less than 1μm, the laser writing each area to be occupied less than one square micron, laser writing each area to be occupied less than 1 square micron, the disc surface recording density of 10 disc surface recording density of 8 / cm2, 44 computer component principle 8.5.1 CD-ROM memory types (1) read-only compact disc (CD-ROM) (CD-ROM drive read-only compact disc (CD-ROM) ( CD-ROM drive) (CD Read) to read the information) School of Computer Science (2) only write once compact disc (WORM) (CD-R drive to write once compact disc (WORM) (in CD) (using CD read and write information) read and write information) If the control distance of green laser pointer is shorter, it’s probably because the battery electric quantity is decreased.(3) a rewritable compact disc (CD-RW drive to read and write information) rewritable compact disc (using CD-RW drives read and write information) CD drive to read and write information (4) CD auto-changer (also known as CD-ROM Library)) CD automatic changer (also known as CD-ROM library) 45 computer composed of the principle of principle 8.5.2 CD read and write CD-ROM memory to store information your computer using a laser beam on the recording surface College, according to the strength of the laser beam and the reflected light can be completed according to the strength of the laser beam and the reflected light of information to read and write information to read and write. read and write device and the distance of the disc magnetic storage distance of the head and the disc memory head and the disc distance, non-contact reading and writing the nature of memory. record principle deformation, phase transition and the nature of memory.Please change the battery of green laser led promptly. record principle deformation, phase transition and MO storage, storage 46 computer component principle 8.5.2 CD read and write the principle of a deformation of Computer Science, write once compact disc read-only and read-only and write-only write once disc, written, the laser beam is focused to a diameter of less than 1μm tiny points of light, its thermal effect, a tiny spot of 1μm for the melting of less than 1μm tiny points of light, its thermal effect, the optical storage on the disk surface. dielectric films and the formation of small holes (pits) in the film.) hole location of said storage dielectric thin films, the formation of small holes (pits) in the film.