Q. With what frequency UART operates( where f denoted the crystal frequency )?

View solution

Q. What is the function of SCON register?

View solution

Q. What should be done if we want to double the baud rate?

View solution

Q. When any interrupt is enabled, then where does the pointer moves immediately after this interrupt has occurred?

View solution

Q. What are the contents of the IE register, when the interrupt of the memory location 0x00 is caused?

View solution

Q. After RETI instruction is executed then the pointer will move to which location in the program?

View solution

Q. Which pin of the external hardware is said to exhibit INT0 interrupt?

View solution

Q. Which bit of the IE register is used to enable TxD/RxD interrupt?

View solution

Q. Which of the following combination is the best to enable the external hardware interrupt 0 of the IE register (assuming initially all bits of the IE register are zero)?

View solution

Q. Why normally LJMP instructions are the topmost lines of the ISR?

View solution

Q. Which register is used to make the pulse a level or a edge triggered pulse?

View solution

Q. What is the disadvantage of a level triggered pulse?

View solution

Q. What is the correct order of priority that is set after a controller gets reset?

View solution

Q. How many rows and columns are present in a 16*2 alphanumeric LCD?

View solution

Q. How many data lines are there in a 16*2 alphanumeric LCD?

View solution

Q. Which pin of the LCD is used for adjusting its contrast?

View solution

Q. For writing commands on an LCD, RS bit is

View solution

Q. Which command of an LCD is used to shift the entire display to the right?

View solution

Q. Which command is used to select the 2 lines and 5*7 matrix of an LCD?

View solution

Q. What changes are to be made to send data to an LCD?

View solution