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Installing these sensors follows similar steps to those of other components we ve already installed. The process is essentially the same: run the wiring, connect the sensor, screw the sensor to the wall or door. However, connecting the garage door sensor is a little more involved than saying simply connect the sensor to the door. Since the sensor is connected to both the garage door and the concrete floor, the steps are a little more involved. Once we talk about the garage door sensor, we ll discuss the installation of temperature sensors and the issues unique to them. 20 MINUTES

In addition to being color value placeholders, pixels also have depth, not depth as we d measure a swimming pool, but rather a color density. For example, GIF images have a maximum color depth of 256 unique values; grayscale images have a brightness depth of 256 shades. Because 256 unique colors can t truly express the beauty we capture with a digital camera (even dull scenes can contain tens of thousands of unique colors), programmers decided early on in the digital imaging game to structure high-quality images into components, the most common structure being red, green, and blue, like your computer monitor is based on the RGB color model. We usually call these three components color channels: by adding the brightness values of these three channels together, we get the composite view of digital photos and other bitmaps. Channels are a very efficient method for storing bitmap color information in contrast, GIF images store image colors as explicit color table values, and this is one of the reasons why GIF images are limited to 256 unique colors. By assigning the red, green, and blue color channels in a bitmap image an 8-bit per 8 channel color capability, this equals 2 , meaning the red, green, and blue channels can each have one of 256 possible brightness values with which to contribute color to the RGB composite image. Eight bits per channel times three color channels adds up to 24-bit images BMP, PNG, TIFF, TGA (Targa), and Photoshop PSD being the most common file formats that can hold this color information. So, 24-bit images have a maximum unique color capability of 16.7 million colors. However, color depth doesn t stop at 24-bit (8 bits per channel); although monitors today can only display 24-bit image depth, the camera manufacturers anticipate that this will change soon, with the advent of high dynamic range (HDR) displays and higher-definition monitors. Today, many of the middle-range digital cameras can write photos to the Raw file format, whose specifics vary from manufacturer to manufacturer as do the file extensions,

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fCARRIER fAUDIO LSB and fCARRIER fAUDIO USB. As an example, if a 1000kHz carrier is modulated with a 10-kHz baseband audio tone, then the sideband frequencies can be located at 1000 kHz 10 kHz 1010 kHz, and at 1000 kHz 10 kHz 990 kHz. The bandwidth of this signal will thus be twice the baseband frequency, or the upper sideband minus the lower sideband. In the above example, the bandwidth is 2 10 kHz, or 20 kHz. Only the total power changes in an AM signal, or P PC PLSB PUSB. This T is because, as discussed above, the carrier power remains unchanged no matter what baseband modulation amplitude we use, and only the sideband amplitudes will vary. Thus, the total power of an AM signal will equal the sum of the carrier and sideband powers. In fact, when the carrier is amplitude

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Since each of the integrals on the half line is convergent, we conclude that the original improper integral over the entire real line is convergent and that its value is + = . 2 2

On large projects, the producer may be too busy to keep track of the progress of all the tasks by herself. If this happens, she may get a project manager to help out. Although it