1) Given the file in C, create a new while (1) loop to contain a clear LCD followed by a for loop to print all the ASCII characters from 33 to 123. There should be exactly 0.20 second delay between characters being displayed. Make another one modifies the previous version such that the ASCII characters from 33 to 123 are each printed on the bottom line at column 3, but include the decimal and hexadecimal values of the characters, we can use printf(“%i%x%c”, i, i, i); where i is the loop variable. #include // library containing printf() function #include #include “osc.h” // library for set_osc_32MHz() #include “configureUSART.h” // library for configureUSART(baud) #pragma config WDT = OFF #pragma config OSC = INTIO7 // puts osc/4 on pin 14 to check freq #pragma config MCLRE = OFF #pragma config LVP = OFF #pragma config PBADEN = OFF // PORTB are digital IO void WaitOneSecond(void); void WaitQuarterSecond(void); void main(void) // a C project can only have one main() function { char string[] = ” APSC1299 “; // 16 chars wide to fill bottom line of LCD set_osc_32MHz(); // set MCU to run at 32 MHz // fOSC = 32 000 000 Hz // TOSC = 1/32 000 000 s = 31.25 ns // TCY = 4*TOSC = 125 ns configureUSART(9600ul, 32); // configure MCU serial communication module to run at 9600 baud // with MCU operating at 32 MHz. Defined in configureUSART.c // 9600 bits/s is default communication rate // other choices 2 400, 4 800, 19 200, 38 400 (not available at 1 MHz) // LCD will not work if MCU is not configured for USART _delay(100000ul); _delay(100000ul); _delay(100000ul); _delay(100000ul); _delay(100000ul); // small delay to wait for splash screen to appear ////////////////////////////////////////////////////////////////////////////////////////// // printf(“%c”,0x12); // reset LCD to default 9600 bps // // only works if run during splash screen. // // use only in case LCD was accidently set to another baud rate // // and is printing garbage // WaitOneSecond(); // Wait for reset message to complete // // LCD will not respond to printf() until it is finished. /////////////////////////////////////////////////////////////////////////////////////////// WaitOneSecond(); // The splash screen lasts about one second // LCD will not respond to printf() until it is finished. printf(“%c%c”,0xFE,0x01); //Command – clear and zero display //Not strictly necessary since splash clears itself printf(” Hello World “); // 16 chars wide to fill top line of LCD WaitOneSecond(); WaitOneSecond(); printf(“%s”,string); // 16 chars wide to fill bottom line of LCD WaitOneSecond(); WaitOneSecond(); while(1) { // MCUs run continuously so an endless loop is required. // Jiggle Message. printf(“%c%c”,0xFE, 0x1C); //move message right one column WaitQuarterSecond(); printf(“%c%c”,0xFE, 0x18); //move message left one column WaitQuarterSecond(); } } void WaitOneSecond(void) { int i = 0; for(i=0; i<=80; i++) { _delay(100000ul); // 100 000 * 4 / 32 000 000 = 1/80 s } } void WaitQuarterSecond(void) { int i = 0; for(i=0; i<=20; i++) { _delay(100000ul); // 100 000 * 4 / 32 000 000 = 1/80 s } }

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1. Given a system transfer function G(s) = 3s^3 + 2s^2 + s / s^6 + 4s^5+ 3s^4 + 2s^3 + s^2 + 2s + 6 Determine the steady state response of the system to an excitation: 8sin2t + 15sin3t 2. Construct root loci for (i) s^3 + s^2 + (K+2)s + 3K = 0 (ii) s^4 + 6s^3 + 9s^2 + K(s^2 + 4s + 5) = 0 (iii) s^3 + 5Ks^2 +10 = 0 (iv) s^5 + 2s^4 + 3s^3 +2s^2 + s + K = 0 3. Show that the system with rate feedback in Fig. P6.8a may be reduced to system shown in Fig. P6.8b 4. A linear control system is described by G(s) =10^4(s+1) / s^2 + 110s + 10s^3 (i) obtain Bode magnitude and phase plots (ii) calculate G(s) for w=50 and 1000 rad/s 5. Draw a generic block diagram of a closed loop controls system and describe each of the blocks. Document Preview:

Assignment: Control System Q 1. Q 2. Q 3. Q 4.Assignment: Control System Q 5. Q 6.Assignment: Control System Q 7. Q 8. Q 9.

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1. Give a way to multiply two complex numbers together using fewer than four integer multiplication operations.

2. How much storage would be used by the FFT&#39; if we didn&#39;t circumvent the storage-management problem with the perfect shuffle?

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1. How does a profit-maximizing firm that is operating in a competitive labor market respond to an increase in the wage rate? A. The firm will demand less capital due to the substitution effect. B. The firm will demand more labor due to the substitution effect. C. The firm will produce less output due to the scale effect. D. The firm will demand more capital due to the scale effect. E. The firm will demand more labor due to the scale effect. 2. Labor demand is more elastic A. the greater is the supply elasticity of capital. B. the greater is the elasticity of substitution between labor and capital. C. the greater is the elasticity of demand for the firm’s output. D. the greater is labor’s share in total costs. 3. What is the most accurate description of the value of a worker to the firm? A. The wage. B. The firm’s total output when holding capital fixed. C. The firm’s average product when holding capital fixed. D. The dollar value of the worker’s output. E. The dollar value of the average worker’s output.

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1 Homework stifles the thrill of learning in the mind of the student. 2 It instills an oppressive learn-or-else discipline. 3 It quenches the desire for knowledge and the love of truth. For these reasons 4 homework should never be assigned. (Colman McCarthy, “Homework’s Tyranny Hobbles Promising Minds”)

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