The keyboard and the mouse are types of blank devices

input devices

Explanation:

There are four basic computer components:

 1) input devices: the devices used by the users to input information and commands into the computer, e.g. mouse, keyboard, touchpad, microphone, etc.

 2) output devices: the devices used to relay information to the computer users, e.g. monitor, speakers, printer, etc.

 3) central processing unit (CPU): this is basically the brain of the computer since all the software is executed by the CPU

 4) primary memory: includes the read only memory (ROM) and the random access memory (RAM) that stores all the machine codes processed by the CPU.  

that without the operating systems you would have to control and synchronize computer hardware.