Name: Abdul Wahib
Registration No: 04-3-1-006-2025
Department: DME
Subject: Application of information and
communication technology
Name: Abdul Wahib
Registration No: 04-3-1-006-2025
Department: DME
Subject: Application of information and
communication technology
Storing fractional number:
Computer doesnot store number the same way as the human does .
Especially fractional and decimal number like 0.1 , 3/5 etc.
How computer stores fractional number:
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Computer stores in binary not in a decimal.
Computers use only 0 and 1 instead of 0-9.
Fraction are stored using a specific format called floating – point.
The common standard is IEEE 74.
How truncation errors occurred:
Truncation error:
A truncation error happens when computer can’t store the whole number
exactly so it cuts some part of it.
Why it occurred:
 Computer stores only in binary.
 While some decimal number never end in binary
 The computer have limited space(bits) so it stops early and stores the
approximately result.
How irrational numbers are stored:
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Irrational number are like π (pi) and √2.
They have infinite decimal places.
Computers approximate their result according to the IEEE 74.
The result is close but not exact.