What a computer does (input, process, output, store) in Intro to Computing - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Identify the correct sequence of computer operations

Which of the following sequences correctly shows the main steps a computer performs when running a program?

A Input → Store → Process → Output

B Input → Process → Store → Output

C Process → Input → Store → Output

D Store → Input → Process → Output

💡 Hint

Think about when the computer saves data before working on it.

The computer first receives data (Input), then saves it temporarily (Store), processes it (Process), and finally shows the result (Output).

❓ trace

intermediate

Trace the output of a simple computer operation

Imagine a computer program that takes a number as input, doubles it, stores the result, and then outputs it. If the input is 7, what is the output?

Intro to Computing

input_number = 7
stored_value = input_number * 2
output = stored_value
print(output)

A 7

B Error

C 0

D 14

💡 Hint

Multiply the input by 2 before output.

The program doubles the input 7, so 7 × 2 = 14, which is stored and then output.

❓ identification

advanced

Identify which part of the computer handles storing data

Which component of a computer is primarily responsible for storing data temporarily during processing?

A Memory (RAM)

B Output device

C Input device

D Processor (CPU)

💡 Hint

Think about where data is kept while the computer is working on it.

Memory (RAM) temporarily stores data and instructions while the CPU processes them.

❓ Comparison

advanced

Compare input and output devices

Which of the following pairs correctly matches an input device with an output device?

A Microphone and Hard Drive

B Keyboard and Monitor

C Printer and Mouse

D Speaker and Scanner

💡 Hint

Input devices let you send data to the computer; output devices show or produce results.

A keyboard is used to input data, and a monitor displays output. Other pairs mix input and output incorrectly.

🚀 Application

expert

Determine the output after a series of computer operations

A computer program receives the input number 5. It stores the number, adds 3 to it during processing, then outputs the result. What is the output?

Intro to Computing

input_value = 5
stored_value = input_value
processed_value = stored_value + 3
output = processed_value
print(output)

A 3

B 5

C 8

D Error

💡 Hint

Add 3 to the stored input before output.

The program adds 3 to the stored input 5, resulting in 8, which is then output.