Week 8

Question 1

what is bit rate

Answer 1

unit of measurement of number of bits processed per second (bps or bit/s)

Question 2

what is baud rate

Answer 2

unit of measurement of symbol rate (only 2 symbols are used to represent binary -1,0)

Question 3

What is the difference between big and little endian

Answer 3

big endian transmits the most significant bit first, little endian does it last

Question 4

how do big and little endian work in terms of bytes

Answer 4

big endian: MS byte stored at lowest address
Little endian: LS byte stored at lowest address

Question 5

what is full duplex

Answer 5

simultaneous data transmission and reception over one channel

Question 6

what is half duplex

Answer 6

unidirectional data transmission over one channel

Question 7

serial port vs parallel port communication

Answer 7

serial port-
slower data transfer as 1 bit can be transmitted at a time
simpler hardware

parallel-
fasta data transfer, multiple bits can be transmitted
more complex hardware

Question 8

what are the two types of serial port communication and explanations

Answer 8

synchronous-
shared clock signal
all devices synchronised

asynchronous-
no shared clock
all devices have their own independent clock signal
all devices must have the same clock freq

Question 9

exmaples of serial port communications

Answer 9

USB
UART
I2C