# Binary number system and boolean algebra

The resulting simplified best trading account in india for nri equivalent to the function is therefore obtained as:. Here, we adopt a new representation: An essential prime implicant is defined as a prime implicant which contains at least one cell with a 1 that CAN NOT be included in any other prime implicant.

We shall follow the following convention to represent numbers: The parallel between binary logic and Boolean algebra is close, and this was why much of the theoretical background for the functioning of modern computers is based on Boolean algebra. Now we study expressions of more variables. Can we do without one of these two also?

The method is illustrated with the aid of an example, and then summarized in an algorithmic fashion. The algebraic method uses the theorems shown above and other ones derived using these to simplify expressions. Even the symbols for our numbers [ the symbols 0, 1.

There is one more aspect about Karnaugh maps that arises in practical situations of automation. The operators are defined as follows:. We shall denote variables in the algebra by upper case letters of the alphabets [A. Note that each 2-block eliminates one variable; each 4-block eliminates 2 variables, and binary number system and boolean algebra 8-block eliminates 3 variables.

The distribution of the labels of the cells is such that each cell differs from any of its adjacent cells in precisely one variable. Only numbers are sufficient to describe all the symbols. We have already seen how all information can be represented using characters, which can be represented by 7 binary number system and boolean algebra digits called bits. For the sake of simplicity of expression, we use a shorthand notation for the operators.

The operators are defined as follows:. The two distinguishable binary number system and boolean algebra presence of a Voltage difference or absence of it are used to designate two signal values: As a direct result of the above, we can see that anything that can be done using the decimal number system can be done in any other base also. In other words, the value of each digit in a number is determined not merely by the magnitude of the digit, but also by its position in the number; for each subsequent position contributes by the next higher POWER of the BASE of the counting system to the digit. A common device used to systematically determine all possible values an expression is a truth table.

The term inside the [. Even the symbols for our numbers [ the symbols 0, 1. The importance of this seemingly odd operation is easily explained, and the explanation also gives insight into the real meaning of the operation.

Each of the three cells in the example are essential prime implicants. The optimum procedure involves first identifying and marking off all the essential prime implicants in a Karnaugh map. The purpose of learning these theorems, and Boolean algebra is so that we can manipulate Boolean expressions and derive equivalent, simplified forms given a more complex form. Thus all information has to be transformed in terms of Voltage levels.

This finite representation causes two problems, both of which will be explained for a simpler case where each number is allowed to have a maximum of 4 bits. Some of the important theorems are listed below. Here, we adopt a new representation: When communicating a message between two devices, the parity bit is used binary number system and boolean algebra a simple means of checking if the data being received is not corrupted.

But these binary number system and boolean algebra values, 0 and 1, are sufficient to describe any information using a binary code. That takes care of the overflow problem. This is a problem of overflow. An essential prime implicant is defined as a prime implicant which contains at least one cell with a 1 that CAN NOT be included in any other prime implicant. What we call the significance of "zero" is really the important insight about the position of digits in a number.