Different number systems are taught, for one, to let you understand the basic concepts. Most number systems, however, will seldom be used. If you work with computers, you will mainly need:
Binary-
Binary Number System
The first computer to use the binary number system was probably the Z1, started by Konrad Zuse in 1936. It was a mechanical computer, not fully programmable, but is still considered a computer.
Binary
Computers are based on a binary number system.
Binary number system ,which has only two digits 0 and 1.
2 (i.e., 0 or 1)
binary number system used in computers because computer can understand only binary language as it starts from 0and 1. which makes computer easier.
Over 9000!
They use the binary sysem because the number 1 means the switch is turned on and the number 0 means the switch is off. There is no way to use the decimal number system.
The binary number for the decimal 134 is calculated as 128+4+2=10000110. The binary number system is used internally on almost all computers and computer based devices like cell phones.
A.N.D. Leibniz defined the binary number system.