USB flash drive

A USB flash drive is a NAND-type flash memory data storage device integrated with a USB (universal serial bus) interface. USB flash drives are typically removable and rewritable, much shorter than a floppy disk (1 to 4 inches or 2.5 to 10 cm), and weigh less than 2 ounces (60 g). Storage capacities typically range from 64 MB to 32 GB^[1] with steady improvements in size and price per gigabyte. Some allow 1 million write or erase cycles^[2][3] and have 10-year data retention,^[4] connected by USB 1.1 or USB 2.0. USB Memory card readers are also available, whereby rather than being built-in, the memory is a removable flash memory card housed in what is otherwise a regular USB flash drive, as described below.

About Touch Screen

A touch screen is a computer display screen that is sensitive to human touch, allowing a user to interact with the computer by touching pictures or words on the screen. Touch screens are used with information kiosks, computer-based training devices, and systems designed to help individuals who have difficulty manipulating a mouse or keyboard. Touch screen technology can be used as an alternative user interface with applications that normally require a mouse, such as a Web browser. Some applications are designed specifically for touch screen technology, often having larger icons and links than the typical PC application. Monitors are available with built-in touch screen technology or individuals can purchase a touch screen kit.

A touch screen kit includes a touch screen panel, a controller, and a software driver. The touch screen panel is a clear panel attached externally to the monitor that plugs into a serial or Universal Serial Bus (USB) port or a bus card installed inside the computer. The touch screen panel registers touch events and passes these signals to the controller. The controller then processes the signals and sends the data to the processor. The software driver translates touch events into mouse events. Drivers can be provided for both Windows and Macintosh operating systems. Internal touch screen kits are available but require professional installation because they must be installed inside the monitor.

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Blue Laser Driver Handles High-Capacity Blu-Ray Disc DVD Standard

The EL6900C is the world's first laser driver designed specifically for the new Blu-Ray Disc industry-standard disc-recording format.

The complete laser diode driver includes a two-channel sample and hold that can be programmed for four separate gains under register control. Each channel's 8- by 8-bit multiplying digital-to-analog (DAC) output provides 8-bit full-scale adjustment and 8-bit resolution at any full-scale output. The parts eliminate the need for an external driver by integrating the high-current output that directly drives current into the blue-violet laser.