The 8051 Microcontroller Questions

• The I/O port that does not have a dual-purpose role is:
• An alternate function of port pin P3.1 in the 8051 is:
• The internal RAM memory of the 8051 is:
• Which of the following commands will copy the contents of RAM whose address is in register 0 to port 1?
• Which of the following instructions will load the value 35H into the high byte of timer 0?
• The ADC0804 has ________ resolution.
• The I/O ports that are used as address and data for external memory are:
• To interface external EPROM memory for applications, it is necessary to demultiplex the address/data lines of the 8051.
• The 8051 has ________ parallel I/O ports.
• Which of the following commands will move the number 27H into the accumulator?
• The special function registers can be referred to by their hex addresses or by their register names.
• Bit-addressable memory locations are:
• The designs of a centigrade thermometer and a PWM speed-control circuit can be implemented by the 8051.
• Device pins XTAL1 and XTAL2 for the 8051 are used for connections to an external oscillator or crystal.
• This statement will set the address of the bit to 1 (8051 Micro-controller): SETB 01H
• This program code will read data from port 0 and write it to port 2, and it will stop looping when bit 3 of port 2 is set: STAT: MOV A, PO MOV P2,A JNB P2.3, STAT
• The 8051 can handle ________ interrupt sources.
• The 8-bit address bus allows access to an address range of:
• Which of the following commands will copy the contents of location 4H to the accumulator?
• The following command will rotate the 8 bits of the accumulator one position to the left: RL A