Hexadecimal (hex) is number system to the base 16. In hexadecimal the decimal numbers 0–15 are represented by the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F. Hexadecimal numbers are easy to convert to the computer's internal binary code and are more compact than binary numbers. One hexadecimal digit stands in place of four binary bits (4-bits).

In Pascal hexadecimal is indicated by use a prefixed \$

# Conversion Table

\$0000     0     %0000000000000000
\$0001     1     %0000000000000001
\$0002     2     %0000000000000010
\$0003     3     %0000000000000011
\$0004     4     %0000000000000100
\$0005     5     %0000000000000101
\$0006     6     %0000000000000110
\$0007     7     %0000000000000111
\$0008     8     %0000000000001000
\$0009     9     %0000000000001001
\$000a     10     %0000000000001010
\$000b     11     %0000000000001011
\$000c     12     %0000000000001100
\$000d     13     %0000000000001101
\$000e     14     %0000000000001110
\$000f     15     %0000000000001111
\$0010     16     %0000000000010000
\$0011     17     %0000000000010001
\$0012     18     %0000000000010010
\$0013     19     %0000000000010011
\$0014     20     %0000000000010100
...     ...     ...
\$009f     159     %0000000010011111
\$00a0     160     %0000000010100000
...     ...     ...
\$00ff     255     %0000000011111111
\$0100     256     %0000000100000000
\$0101     257     %0000000100000001