P$2$: A character frame over RS$232$ is a sequence of bits communicating one specific character in ASCII code. There are few items$/$bits in a data frame:

a$.$ Data bits $($D$/$D$6...$DIDO$)$ with Dh being the MSB$.$

b$.$ One start bit

c$.$ Stopbit$($s$)$

d$.$ One paritylbit$($optional$)$

Answer the following questions:

$(1)$ When data bits D$7.$ D$6.$ Di Do being transmitted over an RS$232,$ serial interface, which bit will be transmitted first and which bit last?

$(2)$ Assuming the communication pot setting being $19$:$2/$; $8,$ odd $11($baud rate, data bits, panity, stop bit$).$

a$.$ How many characters can be transmitted per second?

b$.$ If the DCE is a temperature device which provides temperature reading with format being $885868(9-$ characters$),$ what is the upper limit of the temperature sampling rate $($readings$/$sec$)$ imposed by the port setting above?