Answer:
input devices
Step-by-step 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.