แปลง, มือ, เกราะหน้ากะบังหมวก, เลขฐานสอง, รหัสไบนารี, จุดโฟกัส, ศูนย์, โฟกัส, ปรากฏการณ์, ปัญหา, ควบคุม
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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