Chapter 1, Problem 19CRP

Explanation of Solution

Determine the encoded and decoded message of the ASCII notation:

The ASCII code is a set of characters which stands for “American Standard Code for Information Interchange”.

• To encode the sentence, use the ASCII code table as shown below:

• Each short bit is divided in four subparts and each sub part is converted into hexadecimal notation.

$\begin{array}{c}01010111=57\\ 01101000=68\\ 01100001=61\\ 01110100=74\end{array}$

$\begin{array}{c}00100000=20\\ 01100100=64\\ 01101111=6\text{F}\\ 01100101=65\end{array}$

$\begin{array}{c}01110011=73\\ 00100000=20\\ 01101001=69\\ 01110100=74\end{array}$

$\begin{array}{c}00100000=20\\ 01110011=73\\ 01100001=61\\ 01111001=79\end{array}$

$00111111=3\text{F}$

• From the ASCII code table, each hexadecimal notation is expressed in characters as shown below