Question

scroll, Double-click, Douglas Engelbart, optical
invented the computer mouse.
1.
2. An
mouse does not have a ball inside it.
3.
means press and release the left mouse button twice in a
short interval
CON
4. The
wheel helps us to move up and down in a page.
PA​

Answer 1

Answer:

1.douglas engelbart

2.optical mouse

3.double click

4.scroll