An up/down counter used in a TI510PC has three inputs. Which of the following is not one of them? A. Count up B. Count out C. Reset. D. Count down E. None of the above

The correct answer is C. Reset.

A counter is a device that stores a number and increments or decrements that number based on a clock signal. A up/down counter is a counter that can count up or down. The three inputs to a up/down counter are:

• Clock: This is a signal that tells the counter when to increment or decrement its value.
• Count up: This is an input that tells the counter to increment its value.
• Count down: This is an input that tells the counter to decrement its value.

The reset input is used to clear the counter to 0. It is not one of the three inputs that are used to control the counting operation of the counter.