IBM 1130

Floating point numbers for IBM 1130 computers are stored in one or two words of 16 bits each. 

The following is the representation of a floating point number:

 

IBM 1130 Floating Point Representations: (Word 1 of 2)
1 2
 3 4
 5
 6
 7
 8 9
 10
 11
 12
 13 14
 15 16 
Sign Fraction


 

IBM 1130 Floating Point Representations: (Word 2 of 2)
1 2
 3 4
 5
 6
 7
 8 9
 10
 11
 12
 13 14
 15 16 
Fraction
 Exponent


NOTE: The exponent is biased by 128.

INTEGERS are stored in one word of 16 bits, and have a range of -32,768 to +32,767.  They are in two's complement.

 

ALSO NOTE:  The IBM 1800 uses the same data representations.