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Place Value Weights Real Value of Each Digit Units
Hundreds 10 2 7 × 10 2 700
Tens 10 1 2 × 10 1 20
Units 10 0 4 × 10 0 4
In this table:
2
The hundreds place has a weight of 10 (100), so the real value is 7 × 100, resulting in 700.
1
The tens place has a weight of 10 (10), so the real value is 2 × 10, resulting in 20.
0
The ones place has a weight of 10 (1), so the real value is 4 × 1, resulting in 4.
Adding these results together gives the total value of 724.
Binary Number System
Computers are made up of tiny parts like transistors, which act as switches that can either be ON
or OFF, corresponding to two voltage levels. These two states are represented using the numbers
0 and 1, known as binary digits or "bits." Every instruction given to a computer is converted into
binary digits so that the computer can process and execute tasks. This system of 0s and 1s is
called binary code, which is the fundamental language computers understand.
The term 'binary' comes from the prefix 'bi,' meaning two, as seen in words like 'bicycle' (two
wheels) or 'binocular' (two eyes). Binary numbers use a base-2 system, meaning they are
composed only of the digits 0 and 1.
An example of a binary number is 110100.
There is no 2, 3, 4, 5, 6, 7, 8 or 9 in Binary!
Clickipedia
A single binary digit (like '0' or ‘1’) is called a ‘bit’. For example, 11010 is five bits long. The
word bit is made up from the words 'binary digit’.
The following table describing various data size units in terms of bits, along with examples:
Name Size (bits) Examples
Bit 1 0 or 1
Nibble 4 1101, 1001
Byte 8 11010101, 1001010
Word 16 1101011010110010, 1001011000101101
Number System 9

