The decimal numeral system (also called base ten or occasionally denary) has ten as its base. Decimal notation often refers to a base-10 positional notation.
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A decimal is a type of arithmetic number. It is not a whole number, but represents parts of numbers. For example, a decimal might be 10.25 or 0.456.
It comes from the Latin word decimus, meaning 'tenth'. Decimal places are ordered in powers of ten.
0.667 is a terminating decimal.
Decimal comes from the Latin word decimus, meaning tenth, from the root word decem, or 10.
A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. If it does not contain a fractional part then the decimal representation does not require a decimal point.
If it is unsigned representation (meaning high bit is not sign bit) then it is 7F which has a decimal equivalent of 127. If it is a signed number (meaning high bit is sign bit) then numbers range from decimal -64 to +63