ISRO | ISRO CS 2008 | Question 14
Assume that each character code consists of 8 bits. The number of characters that can be transmitted per second through an asynchronous serial line at 2400 baud rate, and with two stop bits, is:
(A)
109
(B)
216
(C)
218
(D)
219
Answer: (C)
Explanation:
\”2400 baud\” means that the serial port is capable of transferring a maximum of 2400 bits per second.
Total Data To send = 1 bit(start) + 8 bits(char size) + 2 bits(Stop) = 11 bits.
Number of 8-bit characters that can be transmitted per second = 2400/11
= 218.18
The effective number of characters transmitted = 218
So, the correct option is (C).
Note: In Asynchronous serial data transfer parity bit is optional.
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Last Updated :
11 Jun, 2018
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