EE2006 Digital Design/S Ranganath
I - 1
I. Number Systems
•
Basic binary addition, subtraction and multiplication.
•
Positional number systems
Binary, octal, decimal, hexadecimal.
•
Conversions between number systems.
•
Signed binary number representations.
Signed magnitude, One’s complement, Two’s complement.
•
Signed binary addition and subtraction.
•
Binary coded decimal (BCD) representation.
•
4 number systems that we must be familiar with:
System
Why?
Remarks
Decimal
10 fingers
Binary
ON/OFF systems
≅
3 times more digits
than decimal
Octal
Shorthand notation
for working with
binary
≅
3 times less digits
than binary
Hex
------- do ---------
≅
4 times less digits
than binary

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