Computer Science:Education

Karnaugh map is a method to simplify Boolean algebra expressions. It was introduced it in 1953 by Maurice Karnaugh at Bell Labs. It can also be described as a special arrangement of truth tables. Consider the following Truth Table: A B Output 0 0 P 0 1 Q 1 0 R 1 1 S   It can be mapped to a K-map as:                                                A B                  0 1 0 P Q 1 R S   Example: Consider the following map. The function plotted is: Z = f(A,B) = A + AB Pairs of 1 are grouped together ...

To create web pages, Html is used. It is particularly useful for creating web documents and to navigate between web pages. Css is useful for styling of web pages. We use css to give visual effects to various elements of an html page. Javascript can be used to make websites respond to user interactions, build apps and games, access information on the internet, organize and present data. Xml is useful for simplifying data storage and sharing. It is a format which is understandable by the computer and enables various elements to efficiently and easily manipulate data. This post will b useful in answering following question number 42 asked in net exam paper dec-37313/iii 42. Which of the following statements is incorrect ? (A) HTML should be used only for structuring the content (B) Cascading Style Sheets should be used for applying visual styles (C) Javascript should be used for interactive functionality (D) XML is used for formatting data by applying differe...

.COM files The .COM code file format is a historic file format since the first version of MS-DOS All code, data, and the stack occupy one 64K segment. The COM format is the original binary executable format used in Control Program for Microcomputers and MS-DOS. It is very simple.   It has no header (with the exception of CP/M 3 files), and contains only code and data. .EXE files .EXE is executable file which is a main entry point for execution of a program. .EXE code files uses RAM more efficiently. Data and code occupy separate segments. The programmer is responsible for setting up the data and code segments properly.   This post will b useful in answering following question number 5 asked in set exam paper dec-37313/III 5. (8086 .exe and .com programs) : Which of the following statements is false ? (A) An .exe program on disk starts with a 512-byte header file, but not a .com program (B) A .com p...

Integrated circuits are silicon chips on which active components such as transistors, FETs and passive components such as resistors, capacitors, inductors are fabricated. In short, IC's are complete electronic circuits which are fabricated by successive diffusions and depositions. IC's are very small in size and less in weight and also consumes less power. IC's are highly reliable and easy to replace. However, IC's can handle limited amount of power and are quite delicate. Also, we cannot fabricate coils and inductors on them. The level of integration in IC's has been ever increasing as : small scale integration(less than 30 circuits per chip), medium scale integration (30-100), large scale integration (100-100000) and very large scale integration (greater than 100000 circuits per chip). Structurelly, we can classify IC,s into three types: Monolithic (active and passive), Film(passive) and Hybrid (active and passive). Film IC's can be further subdivided int...