A Level Computer Science OCR Practice Exam

What is the primary function of an output device?

1. To store programs and data

2. To process input data into signals

3. To translate computer signals into a human-readable form

4. To provide direct data input to the CPU

The correct answer is: To translate computer signals into a human-readable form

The primary function of an output device is to translate computer signals into a human-readable form. This involves converting the electronic signals produced by the computer into formats that can be understood by users, such as text, images, or sounds. Common examples of output devices include monitors, printers, and speakers, which display visual information, provide printed documents, or deliver audio signals, respectively. This function is critical because it allows users to interact with and interpret the results produced by computer processes, making the outputs understandable and usable in real-world applications.