How many SFR are thee in 8051 microcontroller ?

Which of the following instructions does not produce opcode?

Which bits in PSW are responsible for register bank selection in 8051 microcontroller?

The number of bits transmitted or received per second is defined as the?

In a serial port interrupt, after the control is transferred to the interrupt service routine, which flag is cleared?

Which addressing mode has a 3 byte instruction?

Which register bank is selected after the execution of the following instructions?

The hardware method of starting a timer in the 8051 microcontroller is:

Which memory temporarily stores instructions ?

The incorrect statement about timers in 8051 is: