HDTV High-Definition Television
High-definition television, belonging to high-end TV (Advanced TV, or ATV), one of the ideal is to provide close to 35 cm negatives of CD sound quality and similar effects, the U.S. Federal Communications Commission has separation of high-end TV (including high-definition TV ) exclusive channels, the current U.S. public and a number of commercial television has also begun using the technology. High-definition TV and digital TV are usually used interchangeably, but the latter only in digital signals transmitted, the former are two kinds of analog and digital signals to transmit.
Helical-Scan Tape
Tape (TAPE) used to read and write technical, operational manner similar to the VHS video recorders video tapes, reading and writing, the video will be around with the tape on the heads of a certain angle from the read head rotation was arranged in spiral data records.
Help desk technical support center
Enterprise organization, the staff in the use of information technology products in the event of question, we must help objects.
In small companies, help desk may be an MIS staff from all, of the larger corporations may be responsible for a group of experts, while also using software to analyze problems households or tracking the progress of problem-solving. "Help desk" has a twin brother and sister, called "call center" (Service Center). The difference is that the former is to provide internal employee use, and the latter the unity of the enterprise outside the window, is responsible for receiving orders, tracking shipments, or to help resolve product problems.
HiFD High Floppy Disk
By Sony (SONY) developed high-density (HIGH-DENSITY) floppy disk (FLOPPY DISK), storage capacity 200 MB, HIFD device can support 3.5-inch 1.44 MB floppy disk to read. |
