Microprocessor & Microcontroller QUIZ
Q: An instruction used to set the carry Flag in a computer can be classified as ___.
- A: Data transfer
- B: Logical
- C: Arithmetic
- D: Program control
Q: In an 8085 microprocessor, the instruction CMP B has been executed while the content of the accumulator is less than that of register B. As a result ___.
- A: Carry flag will be reset but Zero flag will be set
- B: Carry flag will be set but Zero flag will be reset
- C: Both Carry flag and Zero flag will be reset
- D: Both Carry flag and Zero flag will be set
Q: In a microprocessor, the service routine for a certain interrupt starts from a fixed location of memory which cannot be externally set, but the interrupt can be delayed or rejected. Such an interrupt is ___.
- A: Non-maskable and non-vectored
- B: Maskable and non-vectored
- C: Non-maskable and vectored
- D: Maskable and vectored
Q: . When a CPU is interrupted, it ___.
- A: Stops executing of instructions
- B: Acknowledges interrupt and continues
- C: Acknowledges interrupt and waits for the next instruction from the interrupt device
- D: Acknowledges interrupt and branches of subroutine
Q: . In 8085 μP system, the RST instruction will cause an interrupt ___.
- A: Only if an interrupt service routine is not being executed
- B: Only if interrupts have been enabled by an EI instruction
- C: Only if a bit in the interrupt mask is made 0
- D: None of the above
Q: The number of hardware interrupts (which require an external signal to interrupt) present in an 8085 microprocessor are______.
Q: In the 8085 microprocessor, the RST6 instruction transfers the program execution to the following locations ____.
- A: 30H
- B: 24H
- C: 48H
- D: 60H
Q: In 8085 which addressing mode is also called inherent addressing? ____.
- A: Direct
- B: Register
- C: Immediate
- D: Implicit
Q: Which memory has read operation, byte erase, byte write and chip erase?______.
- A: RAM
- B: UVEPROM
- C: EEPROM
- D: Both (b) and (c)
Q: The 16 bit flag of 8086 microprocessor is responsible to indicate ____.
- A: The condition of memory
- B: The result of addition
- C: The result of subtraction
- D: The condition of result of ALU operation
Q: The SP is indicated by _____.
- A: Single pointer
- B: Stack pointer
- C: Source pointer
- D: Destination pointer
Q: In 8085 _____.
- A: P flag is reset when the result has odd parity
- B: P flag is set when the result has odd parity
- C: P flag is set when the result has even parity
- D: P flag is reset when the result has even parity