Introduction To Computer And Information Science printable pdf download

Introduction To Computer And Information Science

Introduction to Computer and Information Science

Project 2 – Encoding and decoding digital data

All data in a computer system is represented by two digits: 0 and 1. These digits are used to

encode all types of data, including text, numeric values, photos, sound, video, and more.

In this project, you will work with the two most basic types of digital data: text and numbers.

You will start by encoding your name into binary (0 and 1) code, and then will create a Quick

Response (QR) code. You will conclude this project by encoding and decoding several numeric

values.

Complete your project with a word processing program. Include your name, the date, and the

project number at the top of your project. The expected project length is 2 pages, single spaced.

1. Encoding text

Text data includes letters (upper and lower case), numbers, and special symbols (! @ # $

% ^ & * and more). Each of these is represented by a unique binary code. There are

several coding schemes that have been invented over the years. The most common of

these is the American Standard Code for Information Interchange (ASCII). In the

extended version of the ASCII code, each text character is represented by 8 digits. Each

digit is a “bit” and the group of 8 bits is a “byte.”

Here are a few examples:

Letter

ASCII value

01000001

01000010

01000011

01100001

01100010

01100011

Use the Extended ASCII code to write your first and last names in binary code. Here is an

example of the format to use:

01000010 01110010 01111001 01100011 01100101 00100000

space

01001101 01100001 01110010 01110100 01100101 01101110 01110011

You may do this using an Extended ASCII chart. There’s a chart in the textbook (see

page 20) or you may refer to an online chart located on the following web page:

Introduction To Computer And Information Science