In this project, you will be adding an interrupt service routine (isr) to an existing program. the program is already fully functional hexadecimal counter that shows the current counter value on the seven-segment display. you will use the timer to generate an interrupt every x cycles (where x can be between 100 and 200 cycles). your isr needs to do the following things: 1. toggle all eight leds (i. e. if they are all off, they should all be turned on and if they are already on, turn them off) 2. perform any tasks necessary to allow another timer interrupt within 100 to 200 cycles no changes should be made to the existing main loop or sseg_display. asm. code should only be added following the todo comments.

code in main:

jal sseg_display
nop
addiu $a0, $a0, 1
j main
nop

Using the list, you can select the number of photos that will appear on each slide. a. theme b. frame shape c. pictures in album d. picture layout

Now you’re on your own. include a short summary of this section with plots in your lab report. write a matlab script file to do steps (a) through (d) below. include a listing of the script file with your report. 1 the soundsc(xx,fs) function requires two arguments: the first one (xx) contains the vector of data to be played, the second argument (fs) is the sampling rate for playing the samples. in addition, soundsc(xx,fs) does automatic scaling and then calls sound(xx,fs) to actually play the signal. mcclellan, schafer, and yoder, dsp first, 2e, isbn 0-13-065562-7. prentice hall, upper saddle river, nj 07458. c 2015 pearson education, inc. 4 mcclellan, schafer and yoder, signal processing first. prentice hall, upper saddle river, new jersey, 2003. c 2003 prentice hall. (a) generate a time vector (tt) to cover a range of t that will exhibit approximately two cycles of the 4000 hz sinusoids defined in the next part, part (b). use a definition for tt similar to part 2.2(d). if we use t to denote the period of the sinusoids, define the starting time of the vector tt to be equal to t , and the ending time as ct . then the two cycles will include t d 0. finally, make sure that you have at least 25 samples per period of the sinusoidal wave. in other words, when you use the colon operator to define the time vector, make the increment small enough to generate 25 samples per period. (b) generate two 4000 hz sinusoids with arbitrary amplitude and time-shift. x1.t / d a1 cos.2

Description: write function lastfirst() that takes one argument—a list of strings of the format "lastname, firstname" —and returns a list consisting of two lists: (a) a list of all the last names (b) a list of all the first names