Cara Kerja Keyboard Komputer

Summary

This transcript explains the process of how a keyboard works when a key is pressed. It describes how pressing a key creates a small electrical connection, completing a circuit. The data from this action is sent to a microprocessor, which compares it to stored data to identify the corresponding letter. The microprocessor then communicates with the RAM, and the signal is processed before being sent to the monitor to display the pressed key. This entire process, including interactions with the CPU, ROM BIOS, and keyboard controller, highlights the intricate sequence of events that occurs every time a key is pressed.

Takeaways

• 😀 When a key is pressed on the keyboard, it creates a small pressure that connects a circuit.
• 😀 This connection allows for an electric current to flow, completing the circuit when the key is pressed.
• 😀 The computer can detect which key is pressed by processing the data that flows through the circuit.
• 😀 This data is sent to the microprocessor, which compares it with stored data to identify the key pressed.
• 😀 The microprocessor uses this data to identify the corresponding letter or symbol.
• 😀 The microprocessor then sends a signal to the RAM, where the data is immediately processed.
• 😀 At the same time, the microprocessor sends data to other devices, interrupting ongoing computer activities.
• 😀 The computer momentarily stops other tasks to focus on the signal from the keyboard.
• 😀 The signal from the keyboard is passed to the CPU, which processes it further.
• 😀 The signal goes through the ROM BIOS chip and is then sent to the keyboard controller.
• 😀 The data is finally sent to the RAM and displayed on the monitor as the corresponding character.

Q & A

How does pressing a key on the keyboard create a circuit?

When a key on the keyboard is pressed, it causes a small mechanical pressure that connects a circuit, making an electrical connection that allows the keyboard to function.

What happens when the key is released?

When the key is released, the electrical circuit is broken, ending the connection that was formed when the key was pressed.

How does the computer know which key has been pressed?

The data from the pressed key is sent to a microprocessor, which compares the data with its stored information to identify the corresponding letter or command.

What role does the microprocessor play when a key is pressed?

The microprocessor processes the data from the pressed key and sends the relevant signal to the RAM and other parts of the system to identify and display the character.

What happens after the data from the keyboard is processed by the microprocessor?

The microprocessor sends the signal to the RAM for processing, which happens almost simultaneously with the microprocessor's action.

How does the computer prioritize signals from the keyboard?

When a key is pressed, the computer temporarily stops other activities to focus on processing the signal from the keyboard, ensuring that the input is handled immediately.

What is the path that the signal takes after it is sent from the keyboard?

After being processed by the microprocessor, the signal travels to the CPU, then to the ROM BIOS chip, returns to the keyboard controller, enters the RAM, and is finally displayed on the monitor.

Why is the BIOS involved in processing keyboard signals?

The BIOS is involved because it contains the basic input/output system required to manage hardware interactions, including interpreting and processing keyboard inputs.

What is the purpose of the RAM in the keyboard input process?

The RAM temporarily holds the data from the keyboard input, allowing it to be processed and used to display the corresponding character or execute the related command.

How does the signal reach the monitor to display the typed character?

The processed signal is sent from the RAM to the monitor, where it is displayed as the corresponding character, such as the letter 'K'.