To give you an overview of the final exam: it is a 100 question test of which 80 of the questions are multiple choice and then there are 20 short answer essay questions. The final is comprehensive and will cover only the primary text book “Managing Information Technology.” There will be no questions from “The Adventures of an IT Leader.” There are no questions from any of the articles either. 2
In chapter 2 we covered computer software. Remember that Windows operating system is considered the industry standard as a proprietary system. The metalanguage standards used on the Web are HTML and XML. Remember that supercomputers performs complex calculations that support scientific research and can be a powerful Web servers. Know the differences between mainframes, microcomputers, and midrange computers. Examples of open operating systems are Linux and UNIX. Remember that multiprogramming increases the efficiency of computer operations allowing multiple program operation. Multiprocessing refers to multiple CPUs on the same computer system that uses multiprogramming since each computer is working on a separate set of tasks. The markup languages HTML and XML are used to create web pages by formatting the headings, text font, bold or italic appearance, where images or photographs are inserted, and allow links to other web pages. HTML also tells the Web browser how the web page is to be displayed by using tags. These are not programming languages, but instead they provide formatting codes that formats the data on the Web page. XML facilitates data interchange among applications on the Web. Both are subsets of Standard Generalized Markup Language. Third generation languages are translated into machine language so the computer can execute the program. For both 3 rd and 4 th generation languages the language translator compiles the entire program into machine language and then executes it all at once. A translator will execute each program statement as soon as it is translated. 3
Machine language is specific to each particular type of computer and these instructions are in two parts: an operation code and one or more addresses. The operation code tells the control unit what operation is to be performed. The addresses are specific cells in memory whose content will be involved in the operation. The Direct Access Storage Device (DASD) is a file that can be accessed by the computer for immediate storage. The DASDs can be CDs, DVDs, and flash drives. There are six building blocks that make up a digital computer: input, output, memory, arithmetic and logical unit (ALU), the control unit (CU), and files. The Central Processing Unit (CPU) is made up of the Control Unit (CU) and the Arithmetic/Logical Unit (ALU). The CPU interacts directly with the computer’s memory and the input devices where the data flows from the input to the memory, from the memory to the control unit. Then the data flows from the memory to and from files and the ALU, then the data flows to the computer output. We can see that the flow of data always goes
You've reached the end of your free preview.
Want to read all 15 pages?
- Winter '20