The document discusses different number systems including decimal, binary, octal, and hexadecimal. It provides details on the base and digits used for each system. The decimal system uses base 10 and digits 0-9, binary uses base 2 and digits 0-1. Octal uses base 8 and digits 0-7, with the first digit being 0. Hexadecimal uses base 16 and digits 0-9 plus A-F. Examples are given for number representations and conversions between decimal and binary.

1. MADE BY SOUMYA STUTI

2. IN EARLY DAYS PEOPLE USED TO
COUNT WITH THE HELP OF
FINGERS, STONES, PEBBLES, STIKS,
ETC.
MANY NUMBER SYSTEMS WERE THEN
INTRODUCED..
 DECIMAL NUMBER SYSTEM
 BINARY NUMBER SYSTEM
 OCTAL NUMBER SYSTEM
 HEXADECIMAL NUMBER SYSTEM

3.  THE DECIMAL NUMBER SYSTEM HAS 10 AT ITS
BASE.
 IT IS NUMERICAL BASED AND IS MOST WIDELY
USED BY MODERN civilization.
 Consists of digits from 0~9
 EXAMPLE:-
 123
 -46146580
 2
 3

4.  BINARY USES ONLY TWO DIGITS WHICH ARE 0
AND 1.
 BASE 2
 EXAMPLE:-
 (1001)2

5.  IT USES 8 DIGITS WHICH ARE 0,1,2,3,4,5,6,7
 IT IS ALSO CALLED BASE 8
 THE FIRST DIGITS MUST BE 0
 EXAMPLE:-
 2758

6.  THE WORD IS MADE UP OF TWO PARTS WHICH
ARE “HEX” MEANING 6 AND “DECIMAL”
MEANING 10.
 IT IS ALSO CALLED BASE 16 NUMBER SYSTEM
 TO GET 16 DIGITS WE NEED TO USE THE
LETTERS OF ALPHABETS AND THOSE ARE
0,1,2,3,4,5,6,7,8,9,A,B,C,D,F
EXAMPLE:-
 7F12

8. NOW,
HOW TO CONVERT DECIMAL TO BINARY?
HOW TO RETURN BINARY TO DECIMAL?
LET THE DECIMAL BE 25