By James J. Hobuss
The times of billboard/brochure sites are finishing. net builders this present day are on a challenge to convey websites with content material and price. the first skill to complete this can be via hooking up a back-end database that could bring all kinds of useful details to the top person, equivalent to looking for a e-book on a bookstore's web site. This quantity concentrates in integrating Oracle databases. The CD-ROM encompasses a software program toolkit for integrating an Oracle8 database and site. .
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Extra resources for Building Oracle Websites
1 The Operational Amplifier The most common analog circuit semiconductor component is the operational amplifier, called the op amp. This circuit element is usually a monolithic device (an integrated circuit), although hybrid modules, based on discrete transistors, are still used in special applications. The op amp is used in both linear and nonlinear applications involving amplification and signal conditioning. The "classic" op amp, which we will discuss in detail here, is based on a voltage-feedback architecture.
This number is often represented in decibels (dB) as Dynamic range (dB) = 20 x logio (max/min) If both positive and negative values are measured. Maximum value = maximum positive value - minimum negative value For example, a data acquisition system with a 1-mV resolution and a value range of 0 to +10 V (or -5 to +5 V) has a dynamic range of 10,000:1, or 80 dB. This dynamic range requires a minimum of 14 bits to represent it, since 2^^ = 16,384, which is greater than 10,000, whereas 2^^ (8192) is less than 10,000.
The reader should refer to the bibliography for other books that treat op amp theory and practice in greater depth. The simplest op amp circuit is the voltage follower shown in Figure 3-4. It is characterized by full feedback from the output to the inverting (-) input, where the output is in phase with the noninverting (+) input. It is a buffer with very high input impedance and low output impedance. If the op amp Vout Figure 3-4 Op amp voltage follower. 2 Analog Circuit Components 33 Vout Figure 3-5 Op amp inverting amplifier.