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How Computers Work: CPU, Memory, Input and Output

13 Questions

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How Computers Work: CPU, Memory, Input and Output

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Questions and Answers

True or false: All computers perform the same four basic functions: input, storage, processing, and output?

True

True or false: The more complicated a task is and the more information that's input or output, the more processing power and memory a computer needs.

True

Which part of the computer is responsible for converting input into binary information?

Memory

Output devices

Central processing unit

Input devices (correct)

What is the role of the central processing unit (CPU) in a computer?

To process calculations Signup and view all the answers

What determines the amount of processing power and memory a computer needs for a task?

The complexity of the task Signup and view all the answers

What is the function of output devices in a computer?

To convert information into physical output Signup and view all the answers

True or false: Modern computers often have multiple CPUs and large amounts of memory in order to handle tasks like complicated 3-D graphics or recording high-definition movies.

True Signup and view all the answers

Which of the following is an example of an output device?

Printer Signup and view all the answers

Which of the following is NOT mentioned as a type of input or output that computers can interact with?

Temperature Signup and view all the answers

True or false: The CPU calculates how to display each letter pixel-by-pixel?

True Signup and view all the answers

What are the four basic things that all computers do?

The four basic things that all computers do are input, store, process, and output information. Signup and view all the answers

Describe the process of input and output in a computer when a key is pressed on the keyboard.

When a key is pressed on the keyboard, the keyboard converts the letter to a number, which is sent as binary into the computer. The CPU then calculates how to display the letter pixel-by-pixel by requesting step-by-step instructions from memory. The CPU runs these instructions and stores the results as pixels in memory. Finally, the pixel information is sent in binary to the screen, which converts the binary signals into lights and colors. Signup and view all the answers

Computers input information, store and process the information, and then ______ information.

output Signup and view all the answers