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# Answer to Question #265486 in Electrical Engineering for Dragoon

Question #265486

How many characters per second can be transmitted over a 9600-baud line in each of

the following modes? (Assume a character code of eight bits.)

a. Synchronous serial transmission. Also draw timing diagram.

b. Asynchronous serial transmission with two stop bits. Draw timing diagram

c. Asynchronous serial transmission with one stop bit. Draw timing diagram.

1
2021-11-15T11:10:31-0500

a. Synchronous serial transmission. Also draw timing diagram.

Baud Rate = 9600 bps = 9600 bits per second = 1200 bytes per second

This means a maximum of 1200 characters (ASCII codes ) can be transmitted in one second at the baud rate = 9600 bps.

Data transfer is initiated by by MASTER to SLAVE over a synchronus clock pulse

Number of 8-bit characters that can be transmitted per second = (9600)/8 =

1200 character bytes.

b. Asynchronous serial transmission with two stop bits. Draw timing diagram

Total Data To send in 1 frame = 1 bit(start) + 8 bits(char size) + 1 bit(Parity) + 2 bits (Stop) = 12 bits.

Number of 8-bit characters that can be transmitted per second = (9600)/12 =

800 bytes.

c. Asynchronous serial transmission with one stop bit. Draw timing diagram.

Total Data To send in 1 frame = 1 bit(start) + 8 bits(char size) + 1 bit(Parity) + 1 bits (Stop) = 11 bits

Number of 8-bit characters that can be transmitted per second = (9600)/11 =

872 character bytes.

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