Which logical operation can be performed by the ALU in 8051 using the ANL instruction?

• OR

• AND

• XOR

• NOT

Which of the following is a type of Arduino board?

• Arduino Uno

• Arduino Mega

• Arduino Nano

• All of the above

How many timers does the 8051 microcontroller have?

• 1

• 2

• 3

• 4

What is the IC 8255 also known as?

• Programmable Peripheral Interface (PPI)

• Integrated Circuit 8255

• Peripheral Control Unit (PCU)

• Programmable Interface Controller (PIC)

What is the primary function of an ADC interface?

• To convert analog signals to digital signals

• To amplify digital signals

• To filter analog signals

• To store digital data

How many ports are there in 8051?

• 4

• 6

• 8

• 10

What happens when two or more interrupts have the same priority level?

• The interrupt with the highest priority is serviced first

• The interrupts are ignored

• The interrupts are serviced in the order they were received

• The system crashes due to conflict

Which bit of the PCON register is used to enable or disable the idle mode?

• IDL

• IDLE_MODE

• PCON_ENABLE

• SLEEP_MODE

Which of the following is a type of communication interface available on Arduino boards?

• Serial communication (UART)

• Internet communication (Ethernet or Wi-Fi)

• Wireless communication (Bluetooth or Zigbee)

• All of the above

What is the size of the accumulator in 8051?

• 4 bits

• 8 bits

• 16 bits

• 32 bits