1-12 Noting that 3² = 9, formulate a simple procedure for converting base-3 numbers directly to base-9. Use the procedure to convert (21 10201102220112}; to basc 9.

wave.h: #include <stdint.h> typedef struct {    uint16_t nchannels;    uint16_t bits_per_sample;    uint32_t sample_rate;    uint32_t datasize;    int16_t* data;} wavdata_t;    int read_wav(char *wavfile, wavdata_t *);int write_wav(char *wavfile, wavdata_t *); typedef struct {    double r;    double i;} complex_t;    void dft(int16_t *x, complex_t *X, int N); wave.c:  #include <stdio.h>#include <fcntl.h>#include <unistd.h>#include <stdlib.h>#include <math.h>#include "wav.h" int write_wav(char *wavfile, wavdata_t *wav){    int fd = open(wavfile, O_WRONLY | O_CREAT | O_TRUNC, 0644);    if (fd == -1) {        printf("Could not open file %s\n", wavfile);        return -1;    }     write(fd, "RIFF", 4);    uint32_t filesize = wav->datasize + 36;    uint8_t data[20];    data[0] = filesize & 0xff;    data[1] = (filesize>>8) & 0xff;    data[2] = (filesize>>16) & 0xff;    data[3] = (filesize>>24) & 0xff;    write(fd, data,…

When using the division-by-2 method of converting from decimal to binary, the first remainder represents the:   A LSB of the equivalent binary value.   B LSB of the equivalent binary value, providing the final remainder is used to replace the original LSB, which is then moved to the MSB position.   C MSB of the equivalent binary value, providing the following sequence of remainders are written in descending order until the final remainder is achieved. The final remainder is used to replace the original MSB which is discarded.   D MSB of the equivalent binary value.

Question 12 What is the label to reach the commands to invoke the Operating System O/S? Question 13 What register contains the value for conditional statement for execution of the loop?