A data source produces 8-bit ACSII characters. Derive anexpression for the maxim
ID: 3618560 • Letter: A
Question
A data source produces 8-bit ACSII characters. Derive anexpression for the maximum data rate (rate of ASCII characters per second) over a B bps linefor the following: 1. Asynchronous transmission with 1.5 unit stop bit 2. Synchronous transmission, with a frame consisting of 48control bits and 128 information bits. The information field contains 8-bit ASCIIcharacters. A data source produces 8-bit ACSII characters. Derive anexpression for the maximum data rate (rate of ASCII characters per second) over a B bps linefor the following: 1. Asynchronous transmission with 1.5 unit stop bit 2. Synchronous transmission, with a frame consisting of 48control bits and 128 information bits. The information field contains 8-bit ASCIIcharacters.Explanation / Answer
Here, g = data bits
B= data rate on line
Now for each case, compute the fraction ‘g’ oftransmitted bits that are data bits.
1)Given, there are 8 data bits, 1 start bit and 1.5 stop bits.Then
2) Each frame contains 48 control bits + 128 information bits,so each frame will have a total of:
48 + 128 = 176 bits.
The number of characters = 128/8 = 16, then
The number of data bits will be:
16 * 8 = 128 then
g = 128/176
= 0.73