The two key elements of any computer system are the
a. hardware, software
c. monitor, mouse
b. network, keyboard
d. hard drive, cpu

1. before plugging in a new device to a computer you should unplug all other devices turn off the computer turn on the computer 2. many of the maintenance tools for a computer can be found in the control panel under administrative tools display personalization

The blank button automatically displays next to the data when you select a range of numeric data which is an available option for creating a chart

Need ! will choose brainliest! discuss the role of abstraction in the history of computer software.