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Today's AgendaStarting the topicRepresenting Information as Bit PatternsWhat we intend to do today1. ASCII codes2. Representing Numeric Values3. Binary to Decimal conversions and vice versa4. Addition in Binary5. Fraction in Binary RRM related to this topic will be made available through CR.The presentation is quite long hence questions to be entertained at the end of the lecture
We will now consider how information is represented within machines in the form of bit patterns, focusing on popular methods for coding text, numerical data and images.Each of these systems has repercussions.Our goal is to understand these techniques.
Base ten system Base two system
3 7 5 positions quantity 1 0 1 1 positions quantity
We multiply the values of each digit by the quantity associated with its position and add the results. For example, the value represented by 100101 is 37 as shown in the diagram
Value of bit
1 0 0 1 0 1
1 * one = 1
0 * two = 0
1 * four = 4
0 * eight = 0
0 * sixteen = 0
1* thirty-two= 32