ASCII, Unicode, and EBCDIC are, of course, not the only possible codes. The Sophomites from the planet Collegium use the rather strange codeshownin Figure E4.1. There are only thirteen characters in the Sophomite alphabet, and each character uses a 5-bit code. In addition, there are four numeric digits, since the Sophomites have two fingers on each hand and use base 4 for their arithmetic.

a. Given the following binary code, what is the message being sent by the Sophomites?
11001110100000111111000000100110111111110111110000000100100

b. You noticed in part (a) that this code does not delimit between characters. How does one delimit this code? Suppose a bit was dropped during transmission. What happens? Suppose a single bit was altered (0 to 1 or 1 to 0). What happens?

Figure E4.1

Transcribed Image Text:

m 00001 00010 * 10000 10011 10101 * 10110 X 11001 * 11010 + 11111000 1 11111011 → 11111101 V 11111110 00100 01000 .J. 01011 Q 01101 • 01110 .1.