Even before recorded history, humans used various aids, such as pebbles and notched sticks, to keep track of quantities. By 1200, a(n) calculator, called the abacus, had appeared in China. Devices such as the abacus require the operator to apply a(n) to perform calculations. In contrast, calculators, such as the Pascaline and de Colmar's Arithmometer, are designed to carry out calculations autonomously. In the 1800s, an English mathematician named Charles proposed to build a device, called the Analytical Engine that would operate using steam power. The design for this device embodied many of the concepts that define the modern computer. In the 1930s and 1940s, several computers were developed, including the Atanasoff-Berry Computer, Z3, Harvard Mark I, Colossus, and ENIAC. Most of these early computers used tubes, which paved the way for the architecture of first-generation computers, such as UNIVAC. Second-generation computers were smaller and less power hungry because they used. Third-generation computers were even smaller because they used circuits. The key technology for fourth-generation computers, including personal computers, is the .

In a response of approximately 50 words, explain why it would be essential for the successful a/v technician to participate in additional coursework, presentations and seminars offered by equipment manufacturers as well as annual conferences attended by colleagues in the industry.

Write a modular program (no classes yet, just from what you learned last year), that allows two players to play a game of tic-tac-toe. use a two-dimensional char array with 3 rows and 3 columns as the game board. each element of the array should be initialized with an asterisk (*). the program should display the initial board configuration and then start a loop that does the following: allow player 1 to select a location on the board for an x by entering a row and column number. then redisplay the board with an x replacing the * in the chosen location. if there is no winner yet and the board is not yet full, allow player 2 to select a location on the board for an o by entering a row and column number. then redisplay the board with an o replacing the * in the chosen location. the loop should continue until a player has won or a tie has occurred, then display a message indicating who won, or reporting that a tie occurred. player 1 wins when there are three xs in a row, a column, or a diagonal on the game board. player 2 wins when there are three ox in a row, a column, or a diagonal on the game board. a tie occurs when all of the locations on the board are full, but there is no winner. input validation: only allow legal moves to be entered. the row must be 1, 2, or 3. the column must be 1, 2 3. the (row, column) position entered must currently be empty (i. e., still have an asterisk in it).

Negative methods of behavior correction include all but this: sarcasm verbal abuse setting an example for proper behavior humiliation