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How many characters per sec (7 bits + 1 parity) can be transmitted over a 2400 bps line if the transfer is synchronous ( 1 start and 1 stop bit)?

1. 300
2. 240
3. 250
4. 275
| 5.8k views

Ans A) 300

Total number of bits per character while transmitting is (7+1)=8 bits

No of character transmitted 2400/8=300 bps

by Veteran (119k points)
selected by
+7
I think it should be 300

in Synchronous transmission, we don't need start and stop bit.

on;y 8 bits are used ,so 2400/8 = 300 (A)
+1
U r right , it should be 300.
0
0
ok corrected
+2
if it asynchronous,we need to consider start and stop bits?
0
YES FOR SURE.
0
Thank you
+1
refer question no. 19 of ISRO 2007, a slight difference,then why have you not added start and stop bit ?

Awesome tricky question!

For synchronous transfer, we don't need start and stop bits.

So, $\frac{2400}{7+1}=300$

Option A

For asynchronous transfer, we need start and stop bits in order to synchronise!

So, $\frac{2400}{7+1+1+1}=240$

by Loyal (6.6k points)