Managing Information Technology

networking, as influenced by the ever-evolving telecommunications industry. Chapter 4 describes issues related to managing the d ...

19 Chapter 1 has set the stage for the detailed study of information technology (IT) and your role in harnessing that technology ...

20 Part I • Information Technology Basic Components of Computer Systems For historical completeness, we should note that there a ...

Chapter 2 • Computer Systems 21 memory of the bank’s computer. Optical character recognition (OCR)is an input method that direct ...

22 Part I • Information Technology the upper-left corner of each box. The mail stored in each box changes as mail is distributed ...

Chapter 2 • Computer Systems 23 Consider a particular example. Assume that we have a computer where each memory cell is a byte. ...

24 Part I • Information Technology near the end. Thus, we would rarely try to find a single record with a sequential access file ...

Chapter 2 • Computer Systems 25 records in one cell. Because of the existence of this address, it is possible for the computer t ...

26 Part I • Information Technology Operation Code Addresses A 470 500 M 500 200 P 200 means the computer should add the number f ...

Our very short example contains only three instruc- tions and obviously represents only a small portion of a program, but these ...

28 Part I • Information Technology Types of Computer Systems We have covered the underlying structure of computers— the six buil ...

Chapter 2 • Computer Systems 29 serversinstead of midrange systems, but we disagree with this label because a wide variety of ma ...

30 Part I • Information Technology (Japan). As noted earlier, over 80 percent of new PCs now employ Intel processor chips, with ...

Chapter 2 • Computer Systems 31 The Smallest PCs: Smartphones Smartphones are here to stay, with the Apple iPhone and various Bl ...

32 Part I • Information Technology department up to enterprise-wide systems that have assumed many of the roles of mainframe com ...

Chapter 2 • Computer Systems 33 Mainframe Computers Mainframesare the heart of the computing systems for many, perhaps most, maj ...

34 Part I • Information Technology The demand for mainframe computers goes up and down over time, varying with the price–perform ...

Chapter 2 • Computer Systems 35 World’s Fastest Supercomputer: Jaguar The competition is intense to build and operate the world’ ...

Applications Software Applications software includes all programs written to accomplish particular tasks for computer users. Por ...

FIGURE 2.9 Peachtree “Business Status Center” Page from Peachtree by Sage Premium Accounting 2010 (©2009 Sage Software, Inc. All ...