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Computer Science · Hardware & Systems
Input, Output, & Peripherals
It's a two-way conversation! Input devices send your information into the computer, and output devices send the computer's answer back to you.
🔁How You Talk to a Computer
📥Input vs. Output Devices
📤OUTPUT➜ shows results OUT
🖥️Monitor — displays images
🔊Speakers — play sound
🖨️Printer — makes paper copies
📤 Comes FROM the computer
📱 A touchscreen does BOTH at once!
Your finger tap goes in = INPUT 👆
The picture it shows = OUTPUT 🖼️
So it is an input AND output device!
🔌Sensors & Plugging In
📡 Sensors = special inputs
A sensor detects the world (heat, movement, light) and feeds it in. It's how a phone knows to rotate when you turn it sideways!
🔗 Two ways to connect
A peripheral is any extra device you plug in around the outside — by USB cable or wireless Bluetooth.
🔑Key Terms
📥Input Device Hardware that sends data INTO the computer (keyboard, mouse).
📤Output Device Hardware that shows information FROM the computer (monitor, speaker).
🔌Peripheral Any external device you connect around the outside of the computer.
📡Sensor An input device that detects changes in the environment, like motion or light.
🔗USB Universal Serial Bus — a common port that connects peripherals by cable.
📶Bluetooth A wireless technology that connects devices over short distances.
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Remember: INPUT goes IN (you → computer) and OUTPUT comes OUT (computer → you). A touchscreen does both at once!