Interview Questions- MBA Admissions- Job Interviews
- Electronics and Communication, Applied Electronics
• Difference between micro processor and microcontroller
Micro controller is a self-contained processing unit. Micro processor is not a self-contained unit. It has ROM, RAM etc
• What are the flags in 8086?
Carry flag, Parity flag, Auxiliary carry flag, Zero flag, Overflow flag, Trace flag, Interrupt flag, Direction flag, and Sign flag.
• What are the various interrupts in 8086??
Maskable interrupts, Non-Maskable interrupts
• What is meant by Maskable interrupts?
An interrupt that can be turned off by the programmer is known as Maskable interrupt.
• Which interrupts are generally used for critical events??
Non-Maskable interrupts are used in critical events Such as Power failure, Emergency, Shut off etc.
• What is the Maximum clock frequency in 8086?
5 Mhz is the Maximum clock frequency in 8086.
• What are the various segment registers in 8086?
Code, Data, Stack, Extra
• Which Stack is used in 8086?
FIFO (First In First Out) stack is used in 8086.In this type of Stack the first stored information is retrieved first.
• What are the various registers in 8085?
Accumulator register, Temporary register, Instruction register, Stack Pointer, Program Counter are the various registers in 8085 .
• What is Stack Pointer
Stack pointer is a special purpose 16-bit register in the Microprocessor, which holds the address of the top of the stack
• What is Program counter?
Program counter holds the address of either the first byte of the next instruction to be fetched for execution or the address of the next byte of a multi byte instruction, which has not been completely fetched. In both the cases it gets incremented automatically one by one as the instruction bytes get fetched. Also Program register keeps the address of the next instruction.
• Which Stack is used in 8085?
LIFO (Last In First Out) stack is used in 8085.In this type of Stack the last stored information can be retrieved first.
