ITNv7 Lesson 5 - Number Systems

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13 Terms

1

Hexadecimal

A base-16 number system that uses sixteen distinct symbols 0-9 and A-F to represent numbers from 0 to 15.

2

Decimal

Base 10 number system, how we normally count, uses digits 0 to 9.

3

Binary

The binary number system is base 2, using only bits 0 and 1.

4

10010101 in decimal

149

5

10101010 in decimal

170

6

10110101 in hexadecimal

B5

7

11101101 in hexadecimal

ED

8

AF in binary

10101111

9

19 decimal in binary

10011

10

128 decimal in binary

10000000

11

26 decimal in hexadecimal

1A

12

dotted decimal notation

A method of writing an IPv4 address or subnet mask, where groups of 8 bits (called octets) are separated by periods.

13

positional notation

determining a digit value based on the digit position, used in converting from one numbering system to another