Storage Retrieval

Download Developing Windows-Based and Web-Enabled Information Systems by Nong Ye, Teresa Wu PDF

By Nong Ye, Teresa Wu

Many execs and scholars in engineering, technological know-how, company, and different software fields have to boost Windows-based and web-enabled info platforms to shop and use information for determination aid, with no aid from expert programmers. despite the fact that, few books can be found to coach execs and scholars who're now not specialist programmers to improve those details platforms. Developing Windows-Based and Web-Enabled details Systems fills this hole, delivering a self-contained, easy-to-understand, and well-illustrated textual content that explores present recommendations, tools, and software program instruments for constructing Windows-based and web-enabled info structures.

Written in an simply obtainable kind, the e-book info present suggestions, equipment, and software program instruments for Windows-based and web-enabled details structures that shop and use facts. it's self-contained with easy-to-understand small examples to stroll via suggestions and implementation information in addition to large-scale case stories. The ebook describes facts modeling equipment together with entity–relationship modeling, relational modeling and normalization, and object-oriented information modeling, to boost information types of a database. the writer covers the way to use software program instruments within the Microsoft program improvement atmosphere, together with Microsoft entry, MySQL, SQL, visible Studio, visible easy, VBA, HTML, and XML, to enforce databases and advance Windows-based and web-enabled purposes with the database, graphical person interface, and software components.

The ebook takes you thru the full strategy of constructing a working laptop or computer and community software for a data process, highlighting suggestions and operation info. In every one bankruptcy, small facts examples are used to manually stroll via ideas and operational info. those positive aspects and extra provide the conceptual knowing and useful ability required, whether you don’t have a working laptop or computer technological know-how heritage, to strengthen Windows-based or web-enabled purposes to your really expert info system.

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Example text

Hence, an 8-bit binary integer can represent any value in the range [−(27 − 1), (27 − 1)] or [−127, 127]. 3 gives examples of using 8 bits and the signed magnitude method to represent signed numbers −123, 123, 0, −127, and 127. To perform the addition of two signed integers using the signed magnitude method, we need to process the sign bit separately from the number bits. For example, if we perform the addition of one positive integer and one negative integer, we need to determine which integer has a smaller magnitude (a smaller absolute value), perform the subtraction of the smaller integer from the larger integer using the number bits, and assign the sign of the larger integer as the sign of the subtraction result.

3. Construct the binary number by reading the unit digit of the multiplication product from the first step to the last step of Step 1 performed. 45 into a binary number, with four binary digits after the decimal point. We first convert the integer part of the decimal number: 123. In Step 1, we divide 123 by 2, obtain 1 as the reminder of the division, and take the quotient, 61, as the next decimal number. In Step 2, because the decimal number is not 0, we go back to Step 1. The complete procedure is shown as follows.

13 D flip-clop with clock. 14 Logic diagram symbols for the SR, JK, and D flip-flops. 15 Logic diagram of the sequential circuit for a 4-bit register. 16 Logic diagram of the sequential circuit for a 2-bit memory to store four words. Boolean Algebra and Digital Logic Circuits for Computer Hardware 17 words. If A1 A0 are 00, Word0 is selected. If A1 A0 are 01, Word1 is selected; if A1 A0 are 10, Word2 is selected; and if A1 A0 are 11, Word3 is selected. 16 is set to 1, the D flip-flops for the selected word are allowed to update its outputs from its inputs, that is, to write the input data to the memory at the selected word location.

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