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The Japanese version of the PAC can also run Arcade CD-ROM² discs through the use of an Arcade Card Duo. The retail price was US $600. It came with a LaserActive-branded version of NEC's Turbo Pad (CPD-N1/CPD-N10). An NEC branded version of the LD-ROM² PAC known as the PC Engine PAC (model PCE-LP1) was also released. Due to the unpopularity ...
Copy protection for computer software, especially for games, has been a long cat-and-mouse struggle between publishers and crackers.These were (and are) programmers who defeated copy protection on software as a hobby, add their alias to the title screen, and then distribute the "cracked" product to the network of warez BBSes or Internet sites that specialized in distributing unauthorized ...
Laser types with distinct laser lines are shown above the wavelength bar, while below are shown lasers that can emit in a wavelength range. The height of the lines and bars gives an indication of the maximal power/pulse energy commercially available, while the color codifies the type of laser material (see the figure description for details).
American Laser Games was a company based in Albuquerque, New Mexico that created numerous light gun laserdisc video games featuring live action full motion video.The company was founded in the late 1980s by Robert Grebe, who had originally created a system to train police officers under the company name ICAT (Institute for Combat Arms and Tactics) and later adapted the technology for arcade games.
The active laser medium (also called a gain medium or lasing medium) is the source of optical gain within a laser. The gain results from the stimulated emission of photons through electronic or molecular transitions to a lower energy state from a higher energy state previously populated by a pump source. Examples of active laser media include:
The VTech Laser 200 is an 8-bit home computer from 1983, also sold as the Salora Fellow (mainly in Fennoscandia, particularly Finland), the Seltron 200 in Hungary & Italy, the Smart-Alec Jr. by Dynasty Computer Corporation in Dallas, Texas for the USA, the Texet TX8000A ( United Kingdom), the Dick Smith VZ 200 (in Australia & New Zealand), and the VTech VZ 200 (in the United States & Canada).
No real laser is truly monochromatic; all lasers can emit light over some range of frequencies, known as the linewidth of the laser transition. In most lasers, this linewidth is quite narrow (for example, the 1,064 nm wavelength transition of a Nd:YAG laser has a linewidth of approximately 120 GHz, or 0.45 nm [ 5 ] ).
Schematic diagram of a typical laser, showing the three major parts. A laser is constructed from three principal parts: An energy source (usually referred to as the pump or pump source), A gain medium or laser medium, and; Two or more mirrors that form an optical resonator.