Please give the reason of false

Part I. True or false. If you choose false, please write down your reason(s)(15%) 1. (TIn mode 1 of the timer/counter, after TH and TL are loaded with a 16-bit initial value, the timer must be started. This is done by 'SETB TRO" for timer o and "SETB TR1" for timer 1 2. ) TMOD is a bit-addressable register. 3. (F) 8051's counter cannot count a clock source or pulse source outside of the 8051. NTO INT 4. () Sending data to a printer is duplex. 5 (F) Most 8051 can directly connect to RS232 signals without any extra ICs to convert TTL signals to RS232 signals. MA** 6. (T One way to increase the baud rate of data transfer in the 8051 is to changsa bit in the PCON register, the SMOD bit. 7. () Both timers of 8051 can be used to set the baud rate for RS232 timev communication. owi i 8. (F) Generally an ISR will have the 'RET instruction as its last instruction. 9. ) External interrupt has the highest priority among 8051 interrupts. 10.( F) Interrupts are so important that they cannot be disabled. EAeb 11. ( T) 8051 does not support edge-triggered interrupts. 12. ( F)There is a single interrupt in the interrupt vector table assigned to both Re1t retum tntemmpt external hardware intempts rro and ITI . 13.(F) Upon reset, all interrupts have the same priority 14. (8255 is a CPU that can cooperate with 8051 to perform communication tasks. 15. (T) In the 8255, only port C is bit-addressable