Which of the following statements are correct for 8051 microcontroller? (a) RAM location 20 H to 2F H are set aside for bit addressable read/write memory.(b) Bits P 3.4 and P 3.5 are used to provide the \(\overline {WR} \) and \(\overline {RD} \) signals of external memories.(c) Direct addressing mode is allowed for pushing onto the stack.(d) T×D and R×D pins are TTL compatible and therefore don’t require line driver to make these RS 232 compatible. Choose the correct answer.

Which of the following statements are correct for 8051 microcontroller

1.	Which of the following statements are correct for 8051 microcontroller? (a) RAM location 20 H to 2F H are set aside for bit addressable read/write memory.(b) Bits P 3.4 and P 3.5 are used to provide the \(\overline {WR} \) and \(\overline {RD} \) signals of external memories.(c) Direct addressing mode is allowed for pushing onto the stack.(d) T×D and R×D pins are TTL compatible and therefore don’t require line driver to make these RS 232 compatible. Choose the correct answer.
A.	(a) and (d)
B.	(b) and (c)
C.	(a) and (c)
D.	(b) and (d)
Answer» D. (b) and (d)