help please ASAP

1. The bus of the microcontroller can be divided into: address bus, data bus, 2. When GATE-1 in TMOD, it means that _signals control the start and stop of the timer. 3. Set (SP)-09H, after executing the RETI instruction, (SP) 4. MCS-51 microcontroller timer/counter mode 2 is an) -bit timer/counter. 5. After MCS-51 microcontroller resets, the content of P1 port latch is 6. Set the content of accumulator A to 3FH, then after executing the command SWAP A, the content of A is 7. For 8-bit binary numbers, the two's complement is divided into: 8 If the content in A is 63H, then the value of the P flag bit 9. When the number of keys is less than 8, an) keyboard should be used. When the number of keys is 64, a(n) keyboard should be used