(1) Write a C statement that configures PORT D pins 4, 5, and 6 as output pins without influencing the other pins (2) When is there a need to explicitly clear UNO flag bits? (3) How many locations (in decimal) are there from 0x7000 to 0x87FF? (4) Write a C statement to locally enable the time 1 overflow interrupt. (5) Write a C statement to locally disable the time 0 overflow interrupt. (6) For a 1 MHz 4-bit timer, how long for the timer overflows once if the prescaler is 8? (7) What does the following C statement do to IO pins? DDRB &0x07