8-14
Which of the following is the input device that detects the moving direction and distance
and reflects it on the cursor movement on the screen?
a)
b)
c)
d)
8-15
Keyboard
Touch panel
Bar code reader
Mouse
A disk is labeled 1 through 6 clockwise around the outer edge. The disk spins clockwise
and completes a cycle once every 6 seconds. The disk is in a dark room, and only the portion on top (outlined with a dotted line here) is illuminated for a moment by a spotlight at a
flashing interval of a specified period of time. Which of the following patterns of numbers
can be seen when the spotlight is set to flash every 5 seconds?
6
2
5
1
3
4
a)
b)
c)
d)
233
1, 2, 3, 4, 5, 6
1, 3, 5, 1, 3, 5
1, 4, 1, 4, 1, 4
1, 6, 5, 4, 3, 2