diff --git a/doc/bin_dec_hex.pod b/doc/bin_dec_hex.pod
index 522820c1cb457f9e348758f8eedc3ef1ab778c42..e52f200f841fe662bb4e16c35421f66b8bdd63f5 100644 (file)
--- a/doc/bin_dec_hex.pod
+++ b/doc/bin_dec_hex.pod
bin_dec_hex - How to use binary, decimal, and hexadecimal notation.
-=for html <div align="right"><a href="bin_dec_hex.pdf">PDF</a> version.</div>
-
=head1 DESCRIPTION
Most people use the decimal numbering system. This system uses ten
reset it to zero and increment the digit just before the 9 so the
number becomes "00010". Leading zeros we don't write except if it is
the only digit (number 0). And of course, we write zeros if they occur
-anywhere inside or at the end of a number:
+anywhere inside or at the end of a number:
"00010" -> " 0010" -> " 010" -> " 10", but not " 1 ".
(2) (8) (10) (16)
00000 0 0 0
00001 1 1 1
- 00010 2 2 2
+ 00010 2 2 2
00011 3 3 3
00100 4 4 4
00101 5 5 5
Pascal, "#" for HTML. It is common to assume that if a number starts
with a zero, it is octal. It does not matter what is used as long as
you know what it is. I will use "0x" for hexadecimal, "%" for binary
-and "0" for octal. The following numbers are all the same, just their represenatation (base) is different: 021 0x11 17 %00010001
+and "0" for octal. The following numbers are all the same, just their
+representation (base) is different: 021 0x11 17 %00010001
To do arithmetics and conversions you need to understand one more thing.
It is something you already know but perhaps you do not "see" it yet:
(which is just plain 16) four times and write down "4" to get 0xA04?.
Subtract 64 from 69 (69 - 4*16) and the last digit is 5 --> 0xA045.
-The other method builds ub the number from the right. Let's try 41'029
+The other method builds up the number from the right. Let's try 41'029
again. Divide by 16 and do not use fractions (only whole numbers).
41'029 / 16 is 2'564 with a remainder of 5. Write down 5.
has the advantage that you can see very easily if you should write down
a zero or a one: if you divide by two the remainder will be zero if it
is an even number and one if it is an odd number:
-
+
41029 / 2 = 20514 remainder 1
20514 / 2 = 10257 remainder 0
10257 / 2 = 5128 remainder 1
basic questions. They will not only get their answer, but at the same
time learn a whole lot more.
-Alex van den Bogaerdt E<lt>alex@ergens.op.het.netE<gt>
+Alex van den Bogaerdt E<lt>alex@vandenbogaerdt.nlE<gt>