Bàn phím mới cho màn hình chạm
Cập nhật: 07:28 22/04/2013 GMT+7
Các chuyên gia Đức vừa chế tạo một bàn phím mới gọi là KALQ, cho phép các ngón trỏ lướt nhanh trên các thiết bị màn hình chạm.
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