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The RI flag is set by serial port hardware at the completion of transmitting a byte. ( )

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The P0 port of 8051 can be used for general I/O or as the low byte of the address bus for access external memory with MOVX instruction. ( )

The output of DAC0832 is in voltage. ( )

The number of 8051 interrupt priorities in 8051 is ______ .

If Timer 1 of 8051 counts in mode 2, after executing the instruction “MOV TL1, #01H”, it will generate the overflow after counting ______ numbers.

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