อิเล็กทรอนิกส์, ดิจิตอล, เลขฐานสอง, พื้นที่การคัดลอก, พื้นที่ข้อความ, ว่างเปล่า, สีเขียว, น่าทึ่ง, มืด, 1, รหัส
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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