MIS 502 Ch 7 Quiz Drilled Down

Explanation
Flash RAM is a type of non-volatile memory that can be electrically erased and reprogrammed. It is commonly used to store operating software in thin clients. When the thin client is powered up, the operating software can either be stored in the flash RAM or downloaded from a server. Flash RAM provides a convenient and reliable way to store the operating software, allowing the thin client to quickly and efficiently access the necessary software for its operation.

Explanation
A keyboard controller generates output called an "escape code" when one or more keys are pressed. This statement is false because a keyboard controller generates output called a "scan code" when keys are pressed, not an escape code.

Explanation
The statement suggests that most speech recognition programs are not speaker independent. This means that these programs are designed to recognize and understand the speech of specific individuals, rather than being able to recognize the speech of any speaker. Therefore, the correct answer is false, indicating that the statement is not true.

Explanation
The statement is false because an electronic keyboard does not generate an escape code. It is the keyboard controller that generates the escape code, which can then be translated into ASCII character output.

Explanation
A digital signal processor (DSP) is a specialized microprocessor designed specifically for processing continuous streams of audio or graphical data. Unlike general-purpose microprocessors, DSPs are optimized for performing mathematical calculations and manipulating digital signals, making them ideal for tasks such as audio and video processing, speech recognition, image and video compression, and other multimedia applications. DSPs are capable of executing complex algorithms quickly and efficiently, making them an essential component in devices such as smartphones, digital audio players, and video game consoles.

Explanation
Video display devices generate color by mixing the additive colors, which are red, green, and blue. This is known as the RGB color model, where different intensities of these three primary colors are combined to create a wide range of colors. By varying the intensity of each color, the display can produce any color in the visible spectrum. This is why when you zoom in on a screen, you can see individual red, green, and blue pixels. Therefore, the statement "Video display devices generate color by mixing the additive colors, which are red, green, and blue" is true.

Explanation
Video displays do not generate color using separate red, yellow, and blue pixels. Instead, they use separate red, green, and blue (RGB) pixels to create a wide range of colors. The combination and intensity of these three primary colors are adjusted to produce the desired color on the screen. Therefore, the correct answer is false.

Explanation
A passive matrix display does not use transistors for every pixel. Instead, it uses a grid of conductive lines to control the pixels. Each row and column intersection in the grid represents a pixel, and the display controller sends signals to the appropriate intersections to control the pixels. This method is simpler and less expensive than using transistors for each pixel, but it can result in slower response times and limited viewing angles compared to active matrix displays.

Explanation
An active matrix display does not share transistors among rows and columns of pixels. Instead, each pixel in an active matrix display has its own transistor, allowing for more precise control of each pixel.

Explanation
The display device used in most computer monitors and televisions is a CRT, which stands for cathode ray tube. CRT technology uses an electron beam to generate images on a phosphorescent screen. This technology was widely used in older monitors and televisions before being replaced by LCD and LED displays. Therefore, the statement "True" is correct, as CRTs were indeed the most common display devices in the past.

Explanation
The JPEG format is not a method of compressed storage for moving images. It is a method of compressed storage for still images. Moving images are typically stored in formats such as MPEG or AVI. Therefore, the statement is false.

Explanation
A keyboard controller generates output called a "scan code" when one or more keys are pressed. A scan code is a unique code that represents each key on the keyboard. It is used by the computer to identify which key has been pressed or released. This allows the computer to interpret the user's input and perform the corresponding action or generate the appropriate character on the screen.

Explanation
Thin film transistor (TFT) technology enables the reliable manufacture of relatively large displays. TFT is a type of technology used in LCD (liquid crystal display) screens. It involves a thin film of transistors that control the individual pixels on the display. This technology allows for high-resolution, high-quality images to be displayed on larger screens without compromising reliability. TFT technology is widely used in televisions, computer monitors, and smartphones, among other devices, making it the correct answer for this question.

Explanation
The statement is false because the printing industry generally uses inks based on the subtractive colors, which are cyan, magenta, and yellow. These colors are used because they absorb or subtract certain wavelengths of light, resulting in the desired color. The use of a black ink as a fourth color, known as key or "K," is common in printing to enhance contrast and detail.

Explanation
Video display devices generate color by mixing the additive colors, which are red, green, and blue. This is known as the RGB color model, where different intensities of these three primary colors are combined to create a wide range of colors. By varying the intensity of each color, the device can produce different shades and hues. This is why most screens, such as computer monitors and televisions, use the RGB color model to display images and videos.

Explanation
A pixel is not one seventy second of an inch. This statement is false. The size of a pixel can vary depending on the resolution of the display device, but it is not equivalent to one seventy second of an inch.

Explanation
Sampling does not create a pattern of primary colored pixels. Sampling is the process of converting continuous signals (such as images) into discrete signals by capturing a limited number of data points. It does not involve creating patterns or fooling the eye into perceiving composite colors. Therefore, the correct answer is False.