posted by CL .
Samuel Morse developed a character coding system that was used to send messages along telegraph lines and also for light signalling between ships. Morse code is based on a series of dots and dashes (short of long bursts). The most frequently used letter, E, is coded as a single dot. The least frequently used letter, Q, is coded as dash, dash, dot, dash.
a) How many letters can be coded by a single burst? two bursts? three bursts? four?
b) How many characters can be coded, in total, by up to four bursts?
single burst = 2
two bursts = 4 , (2x2)
three bursts = 8 , (2x2x2)
four bursts = 16
total = 16+8+4+2 = 30