Suppose that a system uses dma for data transfer from disk controller to main memory. further assume that it takes t1 nsec on average to acquire the bus and t2 nsec to transfer one word over the bus (t1 > > t2). after the cpu has programmed the dma controller, how long will it take to transfer 1000 words from the disk controller to main memory, if (a) word-at-a-time mode is used, (b) burst mode is used? assume that commanding the disk controller requires acquiring the bus to send one word and acknowledging a transfer also requires acquiring the bus to send one word.

Look at the circuit illustrated in the figure above. assume that the values of r1 and r2 are equal. if you connect your meter’s test probes to points a and b in the circuit, which of the following voltages would you measure

How can you repin an image on your pinterest pin board a. click on the "repin" button b. click on the "add pin" button c. click on the "upload a pin" button d. click on the "save pin" button.

Design a class tictactoe that: holds the following information about the game: two-dimensional array (3 by 3), and winner. add additional variables as needed. includes the functions to perform the various operations on objects. for example, function to print the board, getting the move, checking if move is valid, determining if there is a winner after each move. add additional operations as needed. includes constructor(s). write the functions of the class, and write a program that uses the class. the program should declare an object of type tictactoe. the program will create the board and store it in the array. the program will allow two players to play the tic-tac-toe game. after every valid move update the array, check if there is a winner. if there is no winner and no tie, then print the board again to continue.