Answers to Questions 4. TRISB 3,4,5,6 ¼ 0 and INTCON 3,7 ¼ 1. 5. RC: Adjustable. XT: Accurate. HS: Maximum clock speed. INTOSC: No external components needed. 6. END. 421 (2) (1) (1) (1) (1) (2) 7. Subroutine: block of code only assembled once and called many times, uses less memory. (2) Macro: block of code that is inserted each time it is needed, faster. (2) (Total 20 marks) Chapter 7 1. Pin 1: Pin 2: Pin 3: Pin 4: !MCLR Master Clear/V pp programming voltage. V DD positive supply, 5 V nominal. V SS negative supply, 0 V. ICSPDAT, In-circuit serial programming data. (1) (1) (1) (1)