Data and instructions can be entered into a computer using various input devices, such as a keyboard for typing text, a mouse for clicking and selecting, or a touchscreen for direct interaction. Additionally, voice recognition systems allow users to input data through spoken commands. Other methods include using scanners for documents, cameras for images, and external storage devices like USB drives for transferring files. Once entered, the computer processes the data according to the provided instructions.
keyboard
A User Interface controls how you enter data and instructions and how information is displayed on the screen.
Memory.
data
occurs when data is entered into the computer
Process,or existing computer instructions that manipulate data, results in useful output?
input
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What sets of instructions do computers use to process data? - Computer Programs
keyboard and mouse
Getting the data that you enter into them correct.
The device that is used to enter sales data into the supermarket computer system is bar code scanner.