Lesson 1, Topic 1
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# Binary Number System

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#### Topic Content:

• Number Bases (Summary)

In the number system chart, the base values and the digits of different number systems can be found. Below is the chart of the numeral system.

### Number Bases (Summary)

In general, the greatest digit used in any number base is 1 less than the base number.

### What is Number System and its Types?

The number system is simply a system to represent or express numbers. There are various types of number systems and the most commonly used ones are decimal number system, binary number system, octal number system, and hexadecimal number system.

### Why is the Number System Important?

Number system helps to represent numbers in a small symbol set. Computers, in general, use binary numbers 0 and 1 to keep the calculations simple and to keep the amount of necessary circuitry less, which results in the least amount of space, energy consumption, and cost.

### What is Base 1 Number System Called?

Base 1 number system is called the unary numeral system and is the simplest numeral system to represent natural numbers.