DBATU Model MCQ – Microcontroller And Its Applications Spread the love Views: 141 [adinserter block="1"] Welcome to your Microcontroller And Its Applications, dated May 22, 2022 1. Which operations are performed by the bit manipulating instructions of boolean processor?Deselect Answer Complement bit Clear bit Set bit All of the above 2. Which control signal/s is/are generated by timing and control unit of 8051 microcontroller in order to access the off-chip devices apart from the internal timings?Deselect Answer ALE PSEN(bar) RD & WR(bar) All of the above 3. How many registers can be utilized to write the programs by an effective selection of register bank in program status word (PSW)?Deselect Answer 8 16 32 64 4. Which among the below mentioned devices of MCS-51 family does not possess two 16 -bit timers/counters?Deselect Answer 8031 8052 8751 All of the above 5. Which operations are performed by stack pointer during its incremental phase?Deselect Answer Push Pop Return All of the above 6. Which is the only register without internal on-chip RAM address in MCS-51?Deselect Answer Stack Pointer Program Counter Data Pointer Timer Register 7. What is the default value of stack once after the system undergoes the reset condition?Deselect Answer 07H 08H 09H 00H 8. Which register bank is supposed to get selected if the values of register bank select bits RS1 & Rs0 are detected to be '1' & '0' respectively?Deselect Answer Bank 0 Bank 1 Bank 2 Bank 3 9. Which locations of 128 bytes on-chip additional RAM are generally reserved for special functions?Deselect Answer 80H to 0FFH 70H to 0FFH 90H to 0FFH 60H to 0FFH 10. What is the required baud rate for an efficient operation of serial port devices in 8051 microcontroller?Deselect Answer 1200 2400 4800 9600 Please fill in the comment box below. [adinserter block="1"] Spread the love
