Input devices (keyboard, mouse, touchscreen) in Intro to Computing - Flowchart & Logic Diagram

Process Overview

Input devices let us send information to a computer. This flowchart shows how a keyboard, mouse, or touchscreen sends signals that the computer understands.

Flowchart

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This flowchart shows the step-by-step process of how input devices (keyboard, mouse, touchscreen) send signals to the computer, which then processes the input.

Step-by-Step Trace - 5 Steps

Step 1: User presses a key on the keyboard

Step 2: Check if device is keyboard

Step 3: Keyboard sends key code to computer

Step 4: Computer processes the key code

Step 5: Process ends

Diagram

 +----------------+      +-----------------+      +------------------+
 |  Keyboard      | ---> | Input Controller | ---> | Central Processor |
 +----------------+      +-----------------+      +------------------+

 +----------------+      +-----------------+      +------------------+
 |  Mouse         | ---> | Input Controller | ---> | Central Processor |
 +----------------+      +-----------------+      +------------------+

 +----------------+      +-----------------+      +------------------+
 | Touchscreen    | ---> | Input Controller | ---> | Central Processor |
 +----------------+      +-----------------+      +------------------+

This diagram shows how each input device sends signals to the input controller, which then passes data to the computer's central processor for handling.

Flowchart Quiz - 3 Questions

What does the keyboard send to the computer when a key is pressed?

A Touch coordinates

B Mouse position data

C A key code representing the key

D Sound signals

Key Result

Input devices convert user actions into signals that the computer processes to understand commands or data.