Representing Data

We can use sequences of bits to represent many kinds of data. Technical Data used in the field explained in computer courses in rawalpindi All we need to do is think of the right binary questions for which the bits give answers that allow us to represent each possible value. Next, we provide examples showing how bits can be used to represent numbers, text, and pictures.

In the previous section, we identified a number using a tree where each node asks a binary question and the branches correspond to the “Yes” and “No” answers. A more compact way of writing down our decisions following the tree is to use 0 to encode a “No” answer, and 1 to encode a “Yes” answer and describe a path to a leaf by a sequence of 0s and 1s—the “No”, “No”, “No” path to 0 is encoded as 000, and the “Yes”, “No”, “Yes” path to 5 is encoded as 101. This is known as the binary number system. Whereas the decimal number system uses ten as its base (there are ten decimal digits, and the positional values increase as powers of ten), the binary system uses two as its base (there are two binary digits, and the positional values increase as powers of two). Some more details of computer courses in rawalpindi are as under.

As in the decimal number system, the value of each binary digit depends on its position. By using more bits, we can represent larger numbers. With enough bits, we can represent any natural number this way. The more bits we have, the larger the set of possible numbers we can represent. As we saw with the binary decision trees, n bits can be used to represent 2n different numbers. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join computer courses in islamabad.