I. Fill in the blanks ( 20 points, 2 points each blank) 1. The 8051 has parallel I/O ports (not pins). 2. 3 machine cycles of the 8051 includes clocks, states. 3. MCS-51 microcontroller has a -bit CPU inside. 4. The interrupt vector address of Timer 0 for an 8051 microcontroller is 5. The addressing modes for the following instructions are addressing, addressing, addressing respectively. (a) MOV B, 30H (b) MOV A, R2 (c)MOVA,@R0 6. 6. The internal RAM memory of the 8051 is: 7. The 8051 has 16-bit counter/timers