Quiz on 8051 Microcontroller

 8051 microcontrollers are manufactured by which of the following companies?

• Atmel

• Philips

• Intel

• All of the above

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

• immediate

• Direct

• Indirect

• Register

8051 has on chip ROM size of 

• 4K bytes

• 8K bytes

• 16K bytes

• 32K bytes

8051 has ........... no. of timers

• 1

• 2

• 3

• 4

8051 has ................no. of pins

• 32

• 40

• 64

• 128

pin no .......................is gnd pin in 8051

• 5

• 10

• 15

• 20

Full form of PSW register is 

• Program Status Work

• Program Status Word

• Program Sending Word

• None of the above

The RS0 and RS1 is ________ bit of PSW register

• 1-2

• 2-3

• 3-4

• 4-5

The function of RS0 and RS1 bit of 8051 is for _______

• Register bank Select

• Memory Select

• I/O select

• None of the above

The higher and lower bytes of a 16-bit register DPTR are represented respectively as

• LDPTR and HDPTR

• DPTRL and DPTRH

• DPH and DPL

• HDP and LDP