8051 series has how many 16 bit registers?

When the microcontroller executes some arithmetic operations, then the flag bits of which register are affected?

How are the bits of the register PSW affected if we select Bank2 of 8051?

If we push data onto the stack then the stack pointer

On power up, the 8051 uses which RAM locations for register R0- R7

Which of the ports act as the 16 bit address lines for transferring data through it?

Which addressing mode is used in pushing or popping any element on or from the stack?

Which operator is the most important while assigning any instruction as register indirect instruction?

Which of the following comes under the indexed addressing mode?

A valid division instruction always makes:

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

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

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

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)?