Analog and Digital Inforamtion
Analog Data: a continuous representation analogous to the actual information it represents
Digital Data: A discrete representation, breaking the information up into separate elements.
Computers cannot work well with analog data, so we digitize the data.
Digitalize: Breaking data into pieces and representing those pieces separately. Why do we use binary to
represent digitalized data.
- It only has to deal with 2 levels.
By adding 1 bit you double the amount of resolution.
Representing Negative value:
Solution : keep all numbers as integers values, with half of them representing negative.
Us ing two decimal digits, let 1 through 49 represent 1 through 49 and let 50-99 represent negatives
94+5= 99 = -1
Formula to computer the negative representation of a number.
Negative (l)= 10^k , where k is the number