The 8051 has ________ parallel I/O ports.

More Questions from The 8051 Microcontroller

• 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?

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