Lab4_de1.pdf

# Lab4_de1.pdf - MCO455 LAB 4 NAME Page 1 STUDENT ID Bit...

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© Copyright David Elmo Ross 2013 MCO455 LAB 4 Page 1 NAME: _______________________________ STUDENT ID #: ______________________________ Bit Manipulation, ARRAYS, & FUNCTIONS LAB SECTION: A B C D E F G H I J K L M N O P AFTER WATCHING THE LAB 4 VIDEO and reading Chapter 2: 1. On the bottom of Page 46 of chapter 2 is the following code: a=SWH & 0x02; if (a) LEDG=LEDG | 0x80; else LEDG=LEDG & 0x7f; In the if (a) statement what two possible values can the variable a have? ______ or _____ 2. Of the following statements, WHICH will cause the MSB green led to turn on . Circle your choice(s): (A) if ( 9 ) LEDG = LEDG | 0x80; else LEDG = LEDG & 0x7F; (B) a=SWH & 0x02; if (a = = 1) LEDG = LEDG | 0x80; // Circle this if any SWH combination turns else LEDG = LEDG & 0x7F; // on the MSB GREEN led (C) a = SWH & 0x02; if ( ! a ) LEDG = LEDG & 0x7F; // Circle this if any SWH combination turns else LEDG = LEDG | 0x80; // on the MSB GREEN led (D) if ( -7 ) LEDG = LEDG | 0x80; else LEDG = LEDG & 0x7F; (E) if ( ! 0 ) LEDG = LEDG | 0x80; else LEDG = LEDG & 0x7F; 3. Write a program that uses the following arrays: unsigned char bob [ ] = { 0xAB, 0xCD }; unsigned char fred [2]; The program should switch the hex digits in both elements of bob

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• Summer '16
• Scott, Richards
• Light-emitting diode, Nixie tube, bottom of Page

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