Cara Kerja Keyboard Komputer - Video Interaktif

Introduction

This tutorial explains how a computer keyboard works as an input device and how it processes commands to display results on a monitor. Understanding this process is essential for grasping the fundamentals of computer operation and input-output management.

Step 1: Input through the Keyboard

• When you press a key on the keyboard, such as "Y":
  • The key press is converted into a binary code by the keyboard processor.
  • This code represents the character for the computer to understand.

Step 2: Signal Transmission

• The keyboard processor sends signals through the BUS:
  • The BUS connects various components of the computer system.
• It communicates with the keyboard controller:
  • The keyboard controller informs the computer when a key is pressed or released.

Step 3: Interrupt Handling

• Signals are sent to the interrupt controller:
  • This controller prioritizes the input command and halts other processes temporarily.

Step 4: Processing by the CPU

• The signal reaches the CPU, which consists of three main parts:
  • Control Unit
  • Arithmetic Logic Unit (ALU)
  • Registers

Sub-step: Control Unit

• The Control Unit manages all operations within the CPU.
• If the command involves arithmetic or logical operations, it routes the instruction to the ALU.

Sub-step: Arithmetic Logic Unit

• The ALU processes the instruction:
  • It has two main sections: arithmetic unit and boolean logic unit.
  • The result is stored temporarily in the accumulator.

Sub-step: Register Function

• After processing, data is sent to the register for temporary storage.
• The information may be sent back to the ALU or to the Control Unit for further actions.

Step 5: Cache and BIOS Interaction

• Processed commands are sent to the cache:
  • This allows for quick access to frequently used data.
• The command is then directed to the ROM BIOS chip:
  • The BIOS acts as firmware storage, enabling rapid execution of commands.

Step 6: Returning to the Keyboard Controller

• The processed output, now translated back from binary to the character "Y", goes back to the keyboard controller:
  • This confirms the input received.

Step 7: Final Output to RAM and Monitor

• The signal is directed to RAM for storage:
  • RAM temporarily holds data for quick retrieval.
• Finally, the processed input is sent to the monitor:
  • The result is displayed according to the command issued.

Conclusion

The journey of a keyboard input from pressing a key to displaying on a monitor involves multiple components and processes within the computer. Each step is crucial for ensuring that user inputs are accurately interpreted and displayed. For further exploration, consider looking into how input devices communicate with various operating systems or delve into the workings of other peripherals.