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Master IT hardware and software installation, configuration, repair, maintenance, and troubleshooting
and fully prepare for the CompTIA A+ 220-901 and 220-902 exams
now in full color, with coverage of Windows 10.
This unique tutorial and study guide teaches the fundamentals of IT device installation, configuration, maintenance, and networking with thorough instruction built on the CompTIA A+ 220-901 and 220-902 exam objectives. Learn all the skills you need to become a certified professional and customer-friendly technician using today's tools and technologies.
Every chapter opens with focused learning objectives and lists the exam objectives covered in that chapter. To meet the learning objectives, each chapter includes detailed figures, helpful Tech Tips, explanations of key terms, step-by-step instruction, and complete coverage of every topic. At the end of every chapter are comprehensive learning and assessment tools, including review questions, key terms list, thought-provoking activities, team building activities, and certification exam tips. Hundreds of hands-on device labs means you don't have to buy an extra lab manual.
Covers Objectives from both 2015 A+ Exams in one book.
- Mobile Devices
- Hardware and Network Troubleshooting
- Windows Operating Systems
- Other Operating Systems and Technologies
- Software Troubleshooting
- Operational Procedures
Learn more quickly and thoroughly with all these study and review tools:
- Learning Objectives provide the goals for each chapter
- Hundreds of photos, figures and tables to help summarize and present information in a visual manner
- Practical Tech Tips give real-world IT Tech Support knowledge
- Soft Skills best practice advice and activities in each chapter cover all the tools and skills you need to become a professional, customer-friendly technician in every category
- Review Questions, including true/false, multiple choice, matching, fill-in-the-blank, and open-ended questions, assess your knowledge of the learning objectives
- Hundreds of thought-provoking activities to apply and reinforce the chapter content
- More than 100 Labs enable you to link theory to practical experience
- Key Terms identify exam words and phrases associated with each topic
- Detailed Glossary clearly defines every key term
- Critical Thinking Activities in every chapter take you beyond the facts to complete comprehension of topics
- Chapter Summary provides a recap of key concepts for studying
To satisfy demands for software systems that collect, organize and utilize pollution prevention auditing, design and implementation, hundreds of software companies have developed and are marketing software systems that perform these functions.
This book is an exhaustive survey and evaluation of the hundreds of pollution prevention software systems and serves as a practical guide for the buyer and user, as well as the managers and compliance professionals that need to know the capabilities and limitations of these systems.
The handbook opens with an overview of chemical tracking systems from the regulator's perspective, which is the driving force for implementation of such systems. The introductory chapter emphasizes the impossibility of true chemical tracking in real-world manufacturing operations, but the true need for chemical management systems.
Because cost and financial control is key to the success of pollution prevention, the handbook then presents the capabilities of available systems. The book focuses on applications such as risk assessment, remediation systems, chemical tracking/management, post pollution prevention, financial analysis, cost impact analysis; and finally, tools for waste reduction planning and control.
Astronomy is an exciting hobby, enjoyed by millions of people and families all over the world. Keith Nichols has been an amateur astronomer for over ten years. In this guide he points out the different kinds of telescopes, which ones are best for the beginner, and which ones are to be avoided. This book is a must read for anybody who is seriously considering getting involved in the hobby of back yard astronomy.
Software Synthesis from Dataflow Graphs addresses the problem of generating efficient software implementations from applications specified as synchronous dataflow graphs for programmable digital signal processors (DSPs) used in embedded real- time systems. The advent of high-speed graphics workstations has made feasible the use of graphical block diagram programming environments by designers of signal processing systems. A particular subset of dataflow, called Synchronous Dataflow (SDF), has proven efficient for representing a wide class of unirate and multirate signal processing algorithms, and has been used as the basis for numerous DSP block diagram-based programming environments such as the Signal Processing Workstation from Cadence Design Systems, Inc., COSSAP from Synopsysr (both commercial tools), and the Ptolemy environment from the University of California at Berkeley.
A key property of the SDF model is that static schedules can be determined at compile time. This removes the overhead of dynamic scheduling and is thus useful for real-time DSP programs where throughput requirements are often severe. Another constraint that programmable DSPs for embedded systems have is the limited amount of on-chip memory. Off-chip memory is not only expensive but is also slower and increases the power consumption of the system; hence, it is imperative that programs fit in the on-chip memory whenever possible.
Software Synthesis from Dataflow Graphs reviews the state-of-the-art in constructing static, memory-optimal schedules for programs expressed as SDF graphs. Code size reduction is obtained by the careful organization of loops in the target code. Data buffering is optimized by constructing the loop hierarchy in provably optimal ways for many classes of SDF graphs. The central result is a uniprocessor scheduling framework that provably synthesizes the most compact looping structures, called single appearance schedules, for a certain class of SDF graphs. In addition, algorithms and heuristics are presented that generate single appearance schedules optimized for data buffering usage. Numerous practical examples and extensive experimental data are provided to illustrate the efficacy of these techniques.
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