CHAPTER 6. Assignment from Mr. Tri Djoko Wahjono

True/False

1. True
2. True
3. False
4. True
5. True
6. False
7. True
8. False
9. False
10. True
11. False
12. False
13. False

Multiple Choice

1. D
2. B
3. A
4. D
5. D
6. B
7. C
8. D

Matching

1. A
2. J
3. H
4. H
5. F
6. C
7. A
8. E
9. B
10. I

Short Answer

1. How does resolution affect images displayed on a monitor?A higher resolution uses a greater number of pixels and thus provides a smoother, sharper, and clearer image. As you increase the resolution, however, some items on the screen appear smaller.How does resolution relate to the size of an LCD monitor or screen?With LCD monitors and screens, resolution generally is proportional to the size of the device. For example, a widescreen 19-inch LCD monitor typically has a resolution of 1440 × 900, while a widescreen 22-inch LCD monitor has a resolution of 1680 × 1050. LCDs are geared for a specific resolution, called the native resolution. Although you can change the resolution to any setting, for optimal results, use the monitor’s native resolution setting.
2. Describe some of the features of HDTV.HDTV (high-definition television) is the most advanced form of digital television, working with digital broadcast signals, transmitting digital sound, supporting wide screens, and providing resolutions up to 1920 × 1080 pixels. With HDTV, the broadcast signals are digitized when they are sent via over-the-air (OTA) broadcasts from local television networks, satellite, or cable.How do game console users set up the output for the consoles?With game consoles, such as Microsoft’s Xbox 360, Nintendo’s Wii, and Sony’s PlayStation 3, the output device often is a television. Users plug one end of a cable in the game console and the other end in the video port on the television. Home users often prefer the larger television displays for game playing, watching movies, and browsing the Internet on a television connected to a game console.
3. What are two types of wireless printing technology?Two wireless technologies for printing are Bluetooth and infrared.How do they differ in how they communicate with a computer or other device?With Bluetooth printing, a computer or other device transmits output to a printer via radio waves. The computer or other device and the printer do not have to be aligned with each other; rather, they need to be within an approximate 30-foot range. With infrared printing, a printer communicates with a computer or other device using infrared light waves. To print from a smart phone, for example, a user lines up the IrDA port on the smart phone with the IrDA port on the printer.
4. How does an ink-jet printer work?An ink-jet printer is a type of non-impact printer that forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper.What are the differences between dye-sublimation printers used by professionals as compared to home or small business users?Professional applications requiring high image quality, such as photography studios, medical labs, and security identification systems, use dye-sublimation printers. These high-end printers cost thousands of dollars and print images in a wide range of sizes. Most dye-sublimation printers for the home or small business user, by contrast, typically print images in only one or two sizes and are much slower than their professional counterparts. These lower-end dye-sublimation printers are comparable in cost to a photo printer based on ink-jet technology. Some are small enough for the mobile user to carry the printer in a briefcase.
5. What might be included with a surround sound system for a computer?Surround sound systems are available in a variety of configurations. For example, a 2.1 speaker system contains two speakers and a subwoofer. A 5.1 speaker system has four satellite speakers, a center speaker, and a subwoofer. A 6.1 speaker system has four satellite speakers, a front center speaker, a rear center speaker, and a subwoofer. A 7.1 speaker system has four satellite speakers, two side speakers, a center speaker, and a subwoofer.What is audio resolution, and what are three examples of audio resolutions?Audio resolution, which is the number of bytes that represent sound in a given time, is stated as a bit rate such as 8-bit, 16-bit, or 24-bit. A sound card using 8-bit resolution, for example, represents a sound with any 1 of 256 values (28), and a 16-bit sound card uses any 1 of 65,536 values (216). Higher resolutions result in better sound quality. With 8-bit resolution, the sound quality is similar to an AM radio; 16-bit resolution yields optical disc-quality sound; and 24-bit resolution is used for high-quality digital audio editing.