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Across
2.The electrode, especially in a cathode-ray tube, that produces a beam of accelerated electrons.
6.a painting, drawing, design, or photograph in one color or shades of one color
7.A series of vertical bars of varying widths, in which each of the digits zero through nine are represented by a different pattern of bars that can be read by a laser scanner.
10.the act of persisting; stubborn or enduring continuance
11.Polarized electromagnetic radiation whose frequency is in the optical region.
14.Digital-to-analog conversion is a process in which signals having a few (usually two) defined levels or states (digital) are converted into signals having a theoretically infinite number of states (analog
15.Raster graphics are digital images created or captured (for example, by scanning in a photo) as a set of samples of a given space.
16.A bit map (often spelled "bitmap") defines a display space and the color for each pixel or "bit" in the display space.
19.In computers, resolution is the number of pixels (individual points of color) contained on a display monitor, expressed in terms of the number of pixels on the horizontal axis and the number on the vertical axis. The sharpness of the image on a display depends on the resolution and the size of the monitor.
20.A digital camera records and stores photographic images in digital form.
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1.Accelerated Graphics Port (AGP) is an interface specification that enables 3-D graphics to display quickly on ordinary personal computers
3.XGA (Extended Graphics Array) is a high-resolution video display mode that provides screen pixel resolution of 1,024 by 768 in 256 colors or 640 by 480 in high (16-bit) color.
4.In communications engineering, the term codec is used in reference to integrated circuits, or chips that perform data conversion
5.(CGA) One of {IBM}'s earliest hardware video {display standards} for use in {IBM PC}s.
8.light-emitting diode: a semiconductor diode that emits light when conducting current and is used in electronic equipment, esp. for displaying readings on digital watches, calculators, etc.
9.A device, such as a keyboard, used to enter information into a computer.
12.A scanner is a device that captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display
13.mouse is a small device that a computer user pushes across a desk surface in order to point to a place on a display screen and to select one or more actions to take from that position
17.MPEG (pronounced EHM-pehg), the Moving Picture Experts Group, develops standards for digital video and digital audio compression. It operates under the auspices of the International Organization for Standardization (ISO
18.LCD (liquid crystal display) is the technology used for displays in notebook and other smaller computers.

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