Ncert class 11 computer science data representation in. Computer basics, representation of characters in computers. This forms a basis for describing data representation in digital computers using the binary number system. As level computing resources for poole high school students. To understand the limitations of computer arithmetic, you must understand how computers represent numbers. Character codesrepresentation of alphanumeric characters in bits 0 and. It then concentrates on the representation of positive and negative integers and how binary arithmetic is performed within the machine. Once a picture has been taken, it can be downloaded to a computer. Data representation free download as powerpoint presentation. Each digit is multiplied by an appropriate power of 10 depending on its position in the number. Ncert class 11 computer science data representation in computers.
A2 9608 computer science notes a level 9608 computer. Scribd is the worlds largest social reading and publishing site. Learn data representation computer with free interactive flashcards. Computers use different types of numeric codes to represent various forms of data, such as text, number, graphics and sound.
The download includes several fun activities where students have to uncover secret messages using their understanding of binary and ascii. Introduction to computer data representation volume 1 bentham. Data representation chapter one plantation productions. Data representation chapter one probably the biggest stumbling block most beginners encounter when attempting to learn assembly language is the common use of the binary and hexadecimal numbering systems. Many programmers think that hexadecimal or hex 1 numbers represent absolute proof that god never intended anyone to work in assembly language. Number systems, base conversions, and computer data representation decimal and binary numbers when we write decimal base 10 numbers, we use a positional notation system. Data representation and computer arithmetic springerlink.
Data representation introduction to unit 3 in this unit you will look at different ways to represent data in tables, charts, graphs and diagrams. The most basic unit of information in a digital computer is called a bit, which is a. To know data representation in computer we must know following number system. The point is that everything on the computer, from data to programs, is just a bunch of bits. This chapter begins by describing binary codes and how words are used to represent characters. Choose from 500 different sets of data representation computer flashcards on quizlet. Data representation refers to the form in which data is stored. This download contains all lesson resources necessary to teach students how ascii is used to representation text in a computer system.